315400974988657 has 2 divisors, whose sum is σ = 315400974988658. Its totient is φ = 315400974988656.

The previous prime is 315400974988643. The next prime is 315400974988717. The reversal of 315400974988657 is 756889479004513.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 306766257385536 + 8634717603121 = 17514744^2 + 2938489^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-315400974988657 is a prime.

It is not a weakly prime, because it can be changed into another prime (315400974983657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157700487494328 + 157700487494329.

It is an arithmetic number, because the mean of its divisors is an integer number (157700487494329).

Almost surely, 2^{315400974988657} is an apocalyptic number.

It is an amenable number.

315400974988657 is a deficient number, since it is larger than the sum of its proper divisors (1).

315400974988657 is an equidigital number, since it uses as much as digits as its factorization.

315400974988657 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1828915200, while the sum is 76.

The spelling of 315400974988657 in words is "three hundred fifteen trillion, four hundred billion, nine hundred seventy-four million, nine hundred eighty-eight thousand, six hundred fifty-seven".