56139034591885 has 16 divisors (see below), whose sum is σ = 77738158308096. Its totient is φ = 38121596857728.

The previous prime is 56139034591877. The next prime is 56139034591921. The reversal of 56139034591885 is 58819543093165.

It is a cyclic number.

It is not a de Polignac number, because 56139034591885 - 2³ = 56139034591877 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 56139034591885.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7786270264 + ... + 7786277473.

It is an arithmetic number, because the mean of its divisors is an integer number (4858634894256).

Almost surely, 2^{56139034591885} is an apocalyptic number.

It is an amenable number.

56139034591885 is a deficient number, since it is larger than the sum of its proper divisors (21599123716211).

56139034591885 is a wasteful number, since it uses less digits than its factorization.

56139034591885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15572547852.

The product of its (nonzero) digits is 139968000, while the sum is 67.

The spelling of 56139034591885 in words is "fifty-six trillion, one hundred thirty-nine billion, thirty-four million, five hundred ninety-one thousand, eight hundred eighty-five".