317964646081 has 2 divisors, whose sum is σ = 317964646082. Its totient is φ = 317964646080.

The previous prime is 317964646073. The next prime is 317964646117. The reversal of 317964646081 is 180646469713.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 242787780225 + 75176865856 = 492735^2 + 274184^2 .

It is a cyclic number.

It is not a de Polignac number, because 317964646081 - 2³ = 317964646073 is a prime.

It is a super-2 number, since 2×317964646081² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (317964646061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158982323040 + 158982323041.

It is an arithmetic number, because the mean of its divisors is an integer number (158982323041).

Almost surely, 2^317964646081 is an apocalyptic number.

It is an amenable number.

317964646081 is a deficient number, since it is larger than the sum of its proper divisors (1).

317964646081 is an equidigital number, since it uses as much as digits as its factorization.

317964646081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5225472, while the sum is 55.

The spelling of 317964646081 in words is "three hundred seventeen billion, nine hundred sixty-four million, six hundred forty-six thousand, eighty-one".