Q: What is the negative version of the number 665,540,561?
A: -665,540,561
Negative numbers are usually written with - in front of them. They represent a number that is less than zero.
Here are more examples of negative numbers in sequence:
| 665,540,559 | 665,540,560 | 665,540,562 | 665,540,563 |
| -665,540,559 | -665,540,560 | -665,540,562 | -665,540,563 |