315615288121 has 12 divisors (see below), whose sum is σ = 369575742720. Its totient is φ = 268735811400.

The previous prime is 315615288119. The next prime is 315615288169. The reversal of 315615288121 is 121882516513.

It is not a de Polignac number, because 315615288121 - 2¹ = 315615288119 is a prime.

It is a super-2 number, since 2×315615288121² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (315615282121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21320841 + ... + 21335638.

It is an arithmetic number, because the mean of its divisors is an integer number (30797978560).

Almost surely, 2^315615288121 is an apocalyptic number.

It is an amenable number.

315615288121 is a deficient number, since it is larger than the sum of its proper divisors (53960454599).

315615288121 is a wasteful number, since it uses less digits than its factorization.

315615288121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42656644 (or 42656637 counting only the distinct ones).

The product of its digits is 115200, while the sum is 43.

The spelling of 315615288121 in words is "three hundred fifteen billion, six hundred fifteen million, two hundred eighty-eight thousand, one hundred twenty-one".