13109364978 has 32 divisors (see below), whose sum is σ = 26316505152. Its totient is φ = 4353523200.

The previous prime is 13109364967. The next prime is 13109365007. The reversal of 13109364978 is 87946390131.

It is a self number, because there is not a number n which added to its sum of digits gives 13109364978.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2019498 + ... + 2025978.

It is an arithmetic number, because the mean of its divisors is an integer number (822390786).

Almost surely, 2^13109364978 is an apocalyptic number.

13109364978 is an abundant number, since it is smaller than the sum of its proper divisors (13207140174).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13109364978 is a wasteful number, since it uses less digits than its factorization.

13109364978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7690.

The product of its (nonzero) digits is 979776, while the sum is 51.

The spelling of 13109364978 in words is "thirteen billion, one hundred nine million, three hundred sixty-four thousand, nine hundred seventy-eight".