56556783185 has 12 divisors (see below), whose sum is σ = 78948652788. Its totient is φ = 38781794016.

The previous prime is 56556783137. The next prime is 56556783229. The reversal of 56556783185 is 58138765565.

It can be written as a sum of positive squares in 2 ways, for example, as 18116083216 + 38440699969 = 134596^2 + 196063^2 .

It is not a de Polignac number, because 56556783185 - 2³⁴ = 39376914001 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 115421762 + ... + 115422251.

It is an arithmetic number, because the mean of its divisors is an integer number (6579054399).

Almost surely, 2^56556783185 is an apocalyptic number.

It is an amenable number.

56556783185 is a deficient number, since it is larger than the sum of its proper divisors (22391869603).

56556783185 is a wasteful number, since it uses less digits than its factorization.

56556783185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230844032 (or 230844025 counting only the distinct ones).

The product of its digits is 30240000, while the sum is 59.

The spelling of 56556783185 in words is "fifty-six billion, five hundred fifty-six million, seven hundred eighty-three thousand, one hundred eighty-five".