13115537915 has 8 divisors (see below), whose sum is σ = 15820194048. Its totient is φ = 10438064640.

The previous prime is 13115537881. The next prime is 13115537921. The reversal of 13115537915 is 51973551131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13115537915 - 2¹⁰ = 13115536891 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6794651 + ... + 6796580.

It is an arithmetic number, because the mean of its divisors is an integer number (1977524256).

Almost surely, 2^13115537915 is an apocalyptic number.

13115537915 is a deficient number, since it is larger than the sum of its proper divisors (2704656133).

13115537915 is a wasteful number, since it uses less digits than its factorization.

13115537915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13591429.

The product of its digits is 70875, while the sum is 41.

The spelling of 13115537915 in words is "thirteen billion, one hundred fifteen million, five hundred thirty-seven thousand, nine hundred fifteen".