Final answer:
The number 582,672,671 is written in words as 'five hundred eighty-two million, six hundred seventy-two thousand, six hundred seventy-one.'
Step-by-step explanation:
To write large numbers in words, you start with the largest place value, which is in this case the millions.
You then work your way down to the thousands and finally to the hundreds, tens, and ones.
The number 582,672,671 written in letter form is five hundred eighty-two million, six hundred seventy-two thousand, six hundred seventy-one.