13359444978 has 32 divisors (see below), whose sum is σ = 30088138752. Its totient is φ = 3917725200.

The previous prime is 13359444971. The next prime is 13359444979. The reversal of 13359444978 is 87944495331.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (13359444971) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3262726 + ... + 3266817.

It is an arithmetic number, because the mean of its divisors is an integer number (940254336).

Almost surely, 2^13359444978 is an apocalyptic number.

13359444978 is an abundant number, since it is smaller than the sum of its proper divisors (16728693774).

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

13359444978 is a wasteful number, since it uses less digits than its factorization.

13359444978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6529590.

The product of its digits is 13063680, while the sum is 57.

The spelling of 13359444978 in words is "thirteen billion, three hundred fifty-nine million, four hundred forty-four thousand, nine hundred seventy-eight".