onequadrillionth

Onequadrillionth is the numerical value equivalent to one divided by one quadrillion. In scientific notation, it is expressed as 1 x 10^-15. This number represents a very small fraction of a whole. A quadrillion is a unit in the short scale number system, equal to 1,000,000,000,000,000. Therefore, onequadrillionth is 0.000000000000001.

The prefix associated with this magnitude in the International System of Units (SI) is femto-. For example, a femtometer is onequadrillionth of a meter. This unit is commonly used in atomic and nuclear physics, where distances are incredibly small. The radius of a proton, for instance, is approximately 0.84 femtometers. Understanding values at this scale is crucial for comprehending the fundamental structure of matter.