11657599656 has 32 divisors (see below), whose sum is σ = 29161036800. Its totient is φ = 3883594880.

The previous prime is 11657599649. The next prime is 11657599673. The reversal of 11657599656 is 65699575611.

It is a self number, because there is not a number n which added to its sum of digits gives 11657599656.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99816 + ... + 182423.

It is an arithmetic number, because the mean of its divisors is an integer number (911282400).

Almost surely, 2^11657599656 is an apocalyptic number.

It is an amenable number.

11657599656 is an abundant number, since it is smaller than the sum of its proper divisors (17503437144).

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

11657599656 is a wasteful number, since it uses less digits than its factorization.

11657599656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283969 (or 283965 counting only the distinct ones).

The product of its digits is 15309000, while the sum is 60.

The spelling of 11657599656 in words is "eleven billion, six hundred fifty-seven million, five hundred ninety-nine thousand, six hundred fifty-six".