316420522624561 has 2 divisors, whose sum is σ = 316420522624562. Its totient is φ = 316420522624560.

The previous prime is 316420522624553. The next prime is 316420522624567. The reversal of 316420522624561 is 165426225024613.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 314407688087025 + 2012834537536 = 17731545^2 + 1418744^2 .

It is a cyclic number.

It is not a de Polignac number, because 316420522624561 - 2³ = 316420522624553 is a prime.

It is not a weakly prime, because it can be changed into another prime (316420522624567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158210261312280 + 158210261312281.

It is an arithmetic number, because the mean of its divisors is an integer number (158210261312281).

Almost surely, 2^{316420522624561} is an apocalyptic number.

It is an amenable number.

316420522624561 is a deficient number, since it is larger than the sum of its proper divisors (1).

316420522624561 is an equidigital number, since it uses as much as digits as its factorization.

316420522624561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4147200, while the sum is 49.

The spelling of 316420522624561 in words is "three hundred sixteen trillion, four hundred twenty billion, five hundred twenty-two million, six hundred twenty-four thousand, five hundred sixty-one".