264716573081 has 2 divisors, whose sum is σ = 264716573082. Its totient is φ = 264716573080.

The previous prime is 264716572957. The next prime is 264716573141. The reversal of 264716573081 is 180375617462.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 246099335056 + 18617238025 = 496084^2 + 136445^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-264716573081 is a prime.

It is a super-2 number, since 2×264716573081² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (264716576081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132358286540 + 132358286541.

It is an arithmetic number, because the mean of its divisors is an integer number (132358286541).

Almost surely, 2^264716573081 is an apocalyptic number.

It is an amenable number.

264716573081 is a deficient number, since it is larger than the sum of its proper divisors (1).

264716573081 is an equidigital number, since it uses as much as digits as its factorization.

264716573081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1693440, while the sum is 50.

The spelling of 264716573081 in words is "two hundred sixty-four billion, seven hundred sixteen million, five hundred seventy-three thousand, eighty-one".