Q: What is the negative version of the number 661,643,164?
A: -661,643,164
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:
| 661,643,162 | 661,643,163 | 661,643,165 | 661,643,166 |
| -661,643,162 | -661,643,163 | -661,643,165 | -661,643,166 |