56606703681 has 32 divisors (see below), whose sum is σ = 83502760320. Its totient is φ = 33821798400.

The previous prime is 56606703677. The next prime is 56606703701. The reversal of 56606703681 is 18630760665.

It is not a de Polignac number, because 56606703681 - 2² = 56606703677 is a prime.

It is a super-2 number, since 2×56606703681² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 56606703681.

It is not an unprimeable number, because it can be changed into a prime (56606703611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7514725 + ... + 7522253.

It is an arithmetic number, because the mean of its divisors is an integer number (2609461260).

Almost surely, 2^56606703681 is an apocalyptic number.

It is an amenable number.

56606703681 is a deficient number, since it is larger than the sum of its proper divisors (26896056639).

56606703681 is a wasteful number, since it uses less digits than its factorization.

56606703681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10737.

The product of its (nonzero) digits is 1088640, while the sum is 48.

The spelling of 56606703681 in words is "fifty-six billion, six hundred six million, seven hundred three thousand, six hundred eighty-one".