Q: What is the negative version of the number 21,137,517?
A: -21,137,517
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:
| 21,137,515 | 21,137,516 | 21,137,518 | 21,137,519 |
| -21,137,515 | -21,137,516 | -21,137,518 | -21,137,519 |