216366045271 has 2 divisors, whose sum is σ = 216366045272. Its totient is φ = 216366045270.

The previous prime is 216366045209. The next prime is 216366045281. The reversal of 216366045271 is 172540663612.

216366045271 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 216366045271 - 2²⁷ = 216231827543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (216366045281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108183022635 + 108183022636.

It is an arithmetic number, because the mean of its divisors is an integer number (108183022636).

Almost surely, 2^216366045271 is an apocalyptic number.

216366045271 is a deficient number, since it is larger than the sum of its proper divisors (1).

216366045271 is an equidigital number, since it uses as much as digits as its factorization.

216366045271 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 362880, while the sum is 43.

The spelling of 216366045271 in words is "two hundred sixteen billion, three hundred sixty-six million, forty-five thousand, two hundred seventy-one".