Q: What is the negative version of the number 21,643,617?
A: -21,643,617
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:
| 21,643,615 | 21,643,616 | 21,643,618 | 21,643,619 |
| -21,643,615 | -21,643,616 | -21,643,618 | -21,643,619 |