13979278756 has 27 divisors (see below), whose sum is σ = 25291609707. Its totient is φ = 6760620120.

The previous prime is 13979278739. The next prime is 13979278771. The reversal of 13979278756 is 65787297931.

The square root of 13979278756 is 118234.

It is a perfect power (a square), and thus also a powerful number.

13979278756 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 7329555 + ... + 7331461.

Almost surely, 2^13979278756 is an apocalyptic number.

13979278756 is the 118234-th square number.

It is an amenable number.

13979278756 is a deficient number, since it is larger than the sum of its proper divisors (11312330951).

13979278756 is an frugal number, since it uses more digits than its factorization.

13979278756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3880 (or 1940 counting only the distinct ones).

The product of its digits is 40007520, while the sum is 64.

Multiplying 13979278756 by its sum of digits (64), we get a square (894673840384 = 945872²).

The spelling of 13979278756 in words is "thirteen billion, nine hundred seventy-nine million, two hundred seventy-eight thousand, seven hundred fifty-six".