56536101666 has 48 divisors (see below), whose sum is σ = 136738499040. Its totient is φ = 16733727360.

The previous prime is 56536101659. The next prime is 56536101667. The reversal of 56536101666 is 66610163565.

It is not an unprimeable number, because it can be changed into a prime (56536101667) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3311671 + ... + 3328698.

It is an arithmetic number, because the mean of its divisors is an integer number (2848718730).

Almost surely, 2^56536101666 is an apocalyptic number.

56536101666 is an abundant number, since it is smaller than the sum of its proper divisors (80202397374).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56536101666 is a wasteful number, since it uses less digits than its factorization.

56536101666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6640431 (or 6640428 counting only the distinct ones).

The product of its (nonzero) digits is 583200, while the sum is 45.

The spelling of 56536101666 in words is "fifty-six billion, five hundred thirty-six million, one hundred one thousand, six hundred sixty-six".