Fzthirty

Fzsixteen is equal to \(30^{30}\) = \(30\uparrow\uparrow2\) = 205,891,132,094,649,000,000,000,000,000,000,000,000,000,000

Etymology
Fzsixteen is made out of the Fz- prefix and thirty, which ends up becoming \(30^{30}\) when concatenated backwards, ergo, 30 to the power of itself.