13900327956 has 36 divisors (see below), whose sum is σ = 36270392704. Its totient is φ = 4483976400.

The previous prime is 13900327921. The next prime is 13900327979. The reversal of 13900327956 is 65972300931.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6226630 + ... + 6228861.

Almost surely, 2^13900327956 is an apocalyptic number.

It is an amenable number.

13900327956 is an abundant number, since it is smaller than the sum of its proper divisors (22370064748).

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

13900327956 is a wasteful number, since it uses less digits than its factorization.

13900327956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12455532 (or 12455527 counting only the distinct ones).

The product of its (nonzero) digits is 306180, while the sum is 45.

The spelling of 13900327956 in words is "thirteen billion, nine hundred million, three hundred twenty-seven thousand, nine hundred fifty-six".