Q: What is the negative version of the number 145,721,639?
A: -145,721,639
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:
| 145,721,637 | 145,721,638 | 145,721,640 | 145,721,641 |
| -145,721,637 | -145,721,638 | -145,721,640 | -145,721,641 |