11656808736 has 48 divisors (see below), whose sum is σ = 30607222464. Its totient is φ = 3884574464.

The previous prime is 11656808701. The next prime is 11656808743. The reversal of 11656808736 is 63780865611.

It is a tau number, because it is divible by the number of its divisors (48).

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

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, 405925 + ... + 433691.

It is an arithmetic number, because the mean of its divisors is an integer number (637650468).

Almost surely, 2^11656808736 is an apocalyptic number.

11656808736 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

11656808736 is an abundant number, since it is smaller than the sum of its proper divisors (18950413728).

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

11656808736 is a wasteful number, since it uses less digits than its factorization.

11656808736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32153 (or 32145 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 51.

The spelling of 11656808736 in words is "eleven billion, six hundred fifty-six million, eight hundred eight thousand, seven hundred thirty-six".