13656775567744 has 32 divisors (see below), whose sum is σ = 27839575205640. Its totient is φ = 6669588065280.

The previous prime is 13656775567711. The next prime is 13656775567751. The reversal of 13656775567744 is 44776557765631.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1240617277 + ... + 1240628284.

Almost surely, 2^{13656775567744} is an apocalyptic number.

It is an amenable number.

13656775567744 is an abundant number, since it is smaller than the sum of its proper divisors (14182799637896).

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

13656775567744 is an equidigital number, since it uses as much as digits as its factorization.

13656775567744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2481245618 (or 2481245606 counting only the distinct ones).

The product of its digits is 3111696000, while the sum is 73.

The spelling of 13656775567744 in words is "thirteen trillion, six hundred fifty-six billion, seven hundred seventy-five million, five hundred sixty-seven thousand, seven hundred forty-four".