56660661015 has 32 divisors (see below), whose sum is σ = 104613989376. Its totient is φ = 25650535680.

The previous prime is 56660660993. The next prime is 56660661067. The reversal of 56660661015 is 51016606665.

56660661015 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 56660661015 - 2⁵ = 56660660983 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2608726 + ... + 2630355.

It is an arithmetic number, because the mean of its divisors is an integer number (3269187168).

Almost surely, 2^56660661015 is an apocalyptic number.

56660661015 is a deficient number, since it is larger than the sum of its proper divisors (47953328361).

56660661015 is a wasteful number, since it uses less digits than its factorization.

56660661015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5239199.

The product of its (nonzero) digits is 194400, while the sum is 42.

The spelling of 56660661015 in words is "fifty-six billion, six hundred sixty million, six hundred sixty-one thousand, fifteen".