56561354642 has 16 divisors (see below), whose sum is σ = 92866186392. Its totient is φ = 25677285120.

The previous prime is 56561354627. The next prime is 56561354683. The reversal of 56561354642 is 24645316565.

56561354642 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 9667019041 + 46894335601 = 98321^2 + 216551^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17829863 + ... + 17833034.

Almost surely, 2^56561354642 is an apocalyptic number.

56561354642 is a deficient number, since it is larger than the sum of its proper divisors (36304831750).

56561354642 is a wasteful number, since it uses less digits than its factorization.

56561354642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35662973.

The product of its digits is 2592000, while the sum is 47.

The spelling of 56561354642 in words is "fifty-six billion, five hundred sixty-one million, three hundred fifty-four thousand, six hundred forty-two".