56186251855 has 4 divisors (see below), whose sum is σ = 67423502232. Its totient is φ = 44949001480.

The previous prime is 56186251837. The next prime is 56186251879. The reversal of 56186251855 is 55815268165.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55815268165 = 5 ⋅11163053633.

It is not a de Polignac number, because 56186251855 - 2⁹ = 56186251343 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5618625181 + ... + 5618625190.

It is an arithmetic number, because the mean of its divisors is an integer number (16855875558).

Almost surely, 2^56186251855 is an apocalyptic number.

56186251855 is a deficient number, since it is larger than the sum of its proper divisors (11237250377).

56186251855 is a wasteful number, since it uses less digits than its factorization.

56186251855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11237250376.

The product of its digits is 2880000, while the sum is 52.

The spelling of 56186251855 in words is "fifty-six billion, one hundred eighty-six million, two hundred fifty-one thousand, eight hundred fifty-five".