11166636656 has 40 divisors (see below), whose sum is σ = 25230751200. Its totient is φ = 4785699072.

The previous prime is 11166636641. The next prime is 11166636751. The reversal of 11166636656 is 65663666111.

It is a self number, because there is not a number n which added to its sum of digits gives 11166636656.

It is a congruent number.

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, 1011881 + ... + 1022856.

It is an arithmetic number, because the mean of its divisors is an integer number (630768780).

Almost surely, 2^11166636656 is an apocalyptic number.

11166636656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

11166636656 is an abundant number, since it is smaller than the sum of its proper divisors (14064114544).

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

11166636656 is an equidigital number, since it uses as much as digits as its factorization.

11166636656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2034766 (or 2034746 counting only the distinct ones).

The product of its digits is 699840, while the sum is 47.

The spelling of 11166636656 in words is "eleven billion, one hundred sixty-six million, six hundred thirty-six thousand, six hundred fifty-six".