13613578115 has 8 divisors (see below), whose sum is σ = 16337105568. Its totient is φ = 10890321280.

The previous prime is 13613578103. The next prime is 13613578151. The reversal of 13613578115 is 51187531631.

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

It is a de Polignac number, because none of the positive numbers 2^k-13613578115 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67610 + ... + 178320.

It is an arithmetic number, because the mean of its divisors is an integer number (2042138196).

Almost surely, 2^13613578115 is an apocalyptic number.

13613578115 is a deficient number, since it is larger than the sum of its proper divisors (2723527453).

13613578115 is a wasteful number, since it uses less digits than its factorization.

13613578115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135309.

The product of its digits is 75600, while the sum is 41.

The spelling of 13613578115 in words is "thirteen billion, six hundred thirteen million, five hundred seventy-eight thousand, one hundred fifteen".