Q: What is the negative version of the number 661,407,018?
A: -661,407,018
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:
| 661,407,016 | 661,407,017 | 661,407,019 | 661,407,020 |
| -661,407,016 | -661,407,017 | -661,407,019 | -661,407,020 |