56561700045 has 16 divisors (see below), whose sum is σ = 91098052992. Its totient is φ = 29966462400.

The previous prime is 56561700031. The next prime is 56561700047. The reversal of 56561700045 is 54000716565.

It is not a de Polignac number, because 56561700045 - 2⁹ = 56561699533 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 56561699976 and 56561700012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56561700047) 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 15 ways as a sum of consecutive naturals, for example, 12483762 + ... + 12488291.

It is an arithmetic number, because the mean of its divisors is an integer number (5693628312).

Almost surely, 2^56561700045 is an apocalyptic number.

It is an amenable number.

56561700045 is a deficient number, since it is larger than the sum of its proper divisors (34536352947).

56561700045 is a wasteful number, since it uses less digits than its factorization.

56561700045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24972212.

The product of its (nonzero) digits is 126000, while the sum is 39.

The spelling of 56561700045 in words is "fifty-six billion, five hundred sixty-one million, seven hundred thousand, forty-five".