13956991895913 has 32 divisors (see below), whose sum is σ = 21497208606720. Its totient is φ = 7960485884160.

The previous prime is 13956991895843. The next prime is 13956991895971. The reversal of 13956991895913 is 31959819965931.

13956991895913 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13956991895913 - 2⁸ = 13956991895657 is a prime.

It is a super-2 number, since 2×13956991895913² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13956991895513) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5097828 + ... + 7341786.

It is an arithmetic number, because the mean of its divisors is an integer number (671787768960).

Almost surely, 2^{13956991895913} is an apocalyptic number.

It is an amenable number.

13956991895913 is a deficient number, since it is larger than the sum of its proper divisors (7540216710807).

13956991895913 is a wasteful number, since it uses less digits than its factorization.

13956991895913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2255077.

The product of its digits is 637729200, while the sum is 78.

The spelling of 13956991895913 in words is "thirteen trillion, nine hundred fifty-six billion, nine hundred ninety-one million, eight hundred ninety-five thousand, nine hundred thirteen".