11558788656 has 40 divisors (see below), whose sum is σ = 30423610800. Its totient is φ = 3780231936.

The previous prime is 11558788639. The next prime is 11558788669. The reversal of 11558788656 is 65688785511.

It is a self number, because there is not a number n which added to its sum of digits gives 11558788656.

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, 2269231 + ... + 2274318.

It is an arithmetic number, because the mean of its divisors is an integer number (760590270).

Almost surely, 2^11558788656 is an apocalyptic number.

11558788656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

11558788656 is an abundant number, since it is smaller than the sum of its proper divisors (18864822144).

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

11558788656 is a wasteful number, since it uses less digits than its factorization.

11558788656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4543613 (or 4543607 counting only the distinct ones).

The product of its digits is 16128000, while the sum is 60.

The spelling of 11558788656 in words is "eleven billion, five hundred fifty-eight million, seven hundred eighty-eight thousand, six hundred fifty-six".