56110605021 has 24 divisors (see below), whose sum is σ = 83979562680. Its totient is φ = 36058530816.

The previous prime is 56110605007. The next prime is 56110605053. The reversal of 56110605021 is 12050601165.

It is a happy number.

56110605021 is a `hidden beast` number, since 56 + 1 + 1 + 0 + 605 + 0 + 2 + 1 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 41100921 + 56069504100 = 6411^2 + 236790^2 .

It is not a de Polignac number, because 56110605021 - 2⁵ = 56110604989 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56110605521) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 13180 + ... + 335253.

It is an arithmetic number, because the mean of its divisors is an integer number (3499148445).

Almost surely, 2^56110605021 is an apocalyptic number.

It is an amenable number.

56110605021 is a deficient number, since it is larger than the sum of its proper divisors (27868957659).

56110605021 is a wasteful number, since it uses less digits than its factorization.

56110605021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349085 (or 349082 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

The spelling of 56110605021 in words is "fifty-six billion, one hundred ten million, six hundred five thousand, twenty-one".