56491625185 has 4 divisors (see below), whose sum is σ = 67789950228. Its totient is φ = 45193300144.

The previous prime is 56491625149. The next prime is 56491625249. The reversal of 56491625185 is 58152619465.

56491625185 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12213786256 + 44277838929 = 110516^2 + 210423^2 .

It is a cyclic number.

It is not a de Polignac number, because 56491625185 - 2³⁵ = 22131886817 is a prime.

It is a Duffinian 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, 5649162514 + ... + 5649162523.

It is an arithmetic number, because the mean of its divisors is an integer number (16947487557).

Almost surely, 2^56491625185 is an apocalyptic number.

It is an amenable number.

56491625185 is a deficient number, since it is larger than the sum of its proper divisors (11298325043).

56491625185 is a wasteful number, since it uses less digits than its factorization.

56491625185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11298325042.

The product of its digits is 2592000, while the sum is 52.

The spelling of 56491625185 in words is "fifty-six billion, four hundred ninety-one million, six hundred twenty-five thousand, one hundred eighty-five".