56665405608 has 128 divisors (see below), whose sum is σ = 162814924800. Its totient is φ = 16098990336.

The previous prime is 56665405561. The next prime is 56665405627. The reversal of 56665405608 is 80650456665.

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, 37953310 + ... + 37954802.

It is an arithmetic number, because the mean of its divisors is an integer number (1271991600).

Almost surely, 2^56665405608 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56665405608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81407462400).

56665405608 is an abundant number, since it is smaller than the sum of its proper divisors (106149519192).

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

56665405608 is a wasteful number, since it uses less digits than its factorization.

56665405608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2631 (or 2627 counting only the distinct ones).

The product of its (nonzero) digits is 5184000, while the sum is 51.

The spelling of 56665405608 in words is "fifty-six billion, six hundred sixty-five million, four hundred five thousand, six hundred eight".