Q: What is the negative version of the number 21,513,507?
A: -21,513,507
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:
| 21,513,505 | 21,513,506 | 21,513,508 | 21,513,509 |
| -21,513,505 | -21,513,506 | -21,513,508 | -21,513,509 |