2.7164215486824e+21 inches equals 68,997,107,336,532,956,232,296,693,760 nanometers.
Convert 2.7164215486824e+21 inches into meters, kilometers, decimeters, centimeters, milimeters, micrometers, picometers, feet, yards, miles, hands, lightyears, astronomical units, parsecs, etc...
Convert 6.8997107336533E+28 nanometers into meters, kilometers, decimeters, centimeters, milimeters, micrometers, picometers, feet, yards, miles, hands, lightyears, astronomical units, parsecs, etc...