315516620563211 has 2 divisors, whose sum is σ = 315516620563212. Its totient is φ = 315516620563210.

The previous prime is 315516620563189. The next prime is 315516620563219. The reversal of 315516620563211 is 112365026615513.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 315516620563211 - 2¹⁸ = 315516620301067 is a prime.

It is not a weakly prime, because it can be changed into another prime (315516620563219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157758310281605 + 157758310281606.

It is an arithmetic number, because the mean of its divisors is an integer number (157758310281606).

Almost surely, 2^{315516620563211} is an apocalyptic number.

315516620563211 is a deficient number, since it is larger than the sum of its proper divisors (1).

315516620563211 is an equidigital number, since it uses as much as digits as its factorization.

315516620563211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972000, while the sum is 47.

The spelling of 315516620563211 in words is "three hundred fifteen trillion, five hundred sixteen billion, six hundred twenty million, five hundred sixty-three thousand, two hundred eleven".