56660566215 has 32 divisors (see below), whose sum is σ = 98965380096. Its totient is φ = 27453196160.

The previous prime is 56660566133. The next prime is 56660566219. The reversal of 56660566215 is 51266506665.

56660566215 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 56660566215 - 2⁸ = 56660565959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56660566219) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 129889 + ... + 360821.

It is an arithmetic number, because the mean of its divisors is an integer number (3092668128).

Almost surely, 2^56660566215 is an apocalyptic number.

56660566215 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

56660566215 is a deficient number, since it is larger than the sum of its proper divisors (42304813881).

56660566215 is a wasteful number, since it uses less digits than its factorization.

56660566215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232439.

The product of its (nonzero) digits is 1944000, while the sum is 48.

The spelling of 56660566215 in words is "fifty-six billion, six hundred sixty million, five hundred sixty-six thousand, two hundred fifteen".