56212044561 has 6 divisors (see below), whose sum is σ = 81195175490. Its totient is φ = 37474696368.

The previous prime is 56212044541. The next prime is 56212044563. The reversal of 56212044561 is 16544021265.

56212044561 is a `hidden beast` number, since 5 + 621 + 20 + 4 + 4 + 5 + 6 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 56095080336 + 116964225 = 236844^2 + 10815^2 .

It is not a de Polignac number, because 56212044561 - 2¹³ = 56212036369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56212044563) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3122891356 + ... + 3122891373.

Almost surely, 2^56212044561 is an apocalyptic number.

It is an amenable number.

56212044561 is a deficient number, since it is larger than the sum of its proper divisors (24983130929).

56212044561 is a wasteful number, since it uses less digits than its factorization.

56212044561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6245782735 (or 6245782732 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The spelling of 56212044561 in words is "fifty-six billion, two hundred twelve million, forty-four thousand, five hundred sixty-one".