13877477807872 has 72 divisors (see below), whose sum is σ = 31659945992192. Its totient is φ = 5947124198400.

The previous prime is 13877477807863. The next prime is 13877477807873. The reversal of 13877477807872 is 27870877477831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13877477807873) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29931097 + ... + 30391207.

Almost surely, 2^{13877477807872} is an apocalyptic number.

It is an amenable number.

13877477807872 is an abundant number, since it is smaller than the sum of its proper divisors (17782468184320).

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

13877477807872 is an equidigital number, since it uses as much as digits as its factorization.

13877477807872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476965 (or 476951 counting only the distinct ones).

The product of its (nonzero) digits is 1445670912, while the sum is 76.

The spelling of 13877477807872 in words is "thirteen trillion, eight hundred seventy-seven billion, four hundred seventy-seven million, eight hundred seven thousand, eight hundred seventy-two".