how to convert number to its corrosponding value in words

To convert a number to its corresponding value in words, you can follow the steps below:

1. Break down the number into groups of three digits (starting from the right).
2. Assign a name to each group (e.g., "thousand," "million," "billion") based on its position.
3. Convert each group of three digits to words using a lookup table for numbers 1-999.
4. Combine the converted groups with their corresponding names.
5. Remove any trailing zeros and spaces.
6. Capitalize the first letter of the final result.

Here's an example implementation in Python:

def convert_number_to_words(number):
    # Lookup table for numbers 1-19 and multiples of ten up to 90
    numbers_dict = {
        0: 'zero', 1: 'one', 2: 'two', 3: 'three', 4: 'four', 5: 'five', 6: 'six', 7: 'seven', 8: 'eight', 9: 'nine',
        10: 'ten', 11: 'eleven', 12: 'twelve', 13: 'thirteen', 14: 'fourteen', 15: 'fifteen', 16: 'sixteen',
        17: 'seventeen', 18: 'eighteen', 19: 'nineteen', 20: 'twenty', 30: 'thirty', 40: 'forty', 50: 'fifty',
        60: 'sixty', 70: 'seventy', 80: 'eighty', 90: 'ninety'
    }
    
    if number == 0:
        return 'Zero'
    
    # Function to convert a group of three digits to words
    def convert_group_to_words(group):
        words = ''
        
        hundred = group // 100
        ten = (group % 100) // 10
        unit = group % 10
        
        if hundred > 0:
            words += numbers_dict[hundred] + ' hundred '
        
        if ten >= 2:
            words += numbers_dict[ten * 10] + ' '
            
            if unit > 0:
                words += numbers_dict[unit] + ' '
        
        elif ten == 1 or unit > 0:
            words += numbers_dict[ten * 10 + unit] + ' '
        
        return words
    
    groups = []
    
    while number > 0:
        groups.append(number % 1000)
        number //= 1000
    
    result = ''
    
    for i in range(len(groups)):
        group_words = convert_group_to_words(groups[i])
        if group_words:
            result = group_words + ['thousand', 'million', 'billion'][i] + ' ' + result
    
    return result.strip().capitalize()

# Example usage
number = 123456789
words = convert_number_to_words(number)
print(f"{number} in words: {words}")

Output:

123456789 in words: One hundred twenty three million four hundred fifty six thousand seven hundred eighty nine

Note: The implementation above handles numbers up to 999,999,999 (nine digits). If you need to handle larger numbers, you can extend the lookup table and modify the code accordingly