315657491255 has 4 divisors (see below), whose sum is σ = 378788989512. Its totient is φ = 252525993000.

The previous prime is 315657491221. The next prime is 315657491267. The reversal of 315657491255 is 552194756513.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 315657491255 - 2³⁸ = 40779584311 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 315657491197 and 315657491206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31565749121 + ... + 31565749130.

It is an arithmetic number, because the mean of its divisors is an integer number (94697247378).

Almost surely, 2^315657491255 is an apocalyptic number.

315657491255 is a deficient number, since it is larger than the sum of its proper divisors (63131498257).

315657491255 is an equidigital number, since it uses as much as digits as its factorization.

315657491255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63131498256.

The product of its digits is 5670000, while the sum is 53.

The spelling of 315657491255 in words is "three hundred fifteen billion, six hundred fifty-seven million, four hundred ninety-one thousand, two hundred fifty-five".