Q: What is the negative version of the number 721,665,641?
A: -721,665,641
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:
| 721,665,639 | 721,665,640 | 721,665,642 | 721,665,643 |
| -721,665,639 | -721,665,640 | -721,665,642 | -721,665,643 |