11813643168 has 24 divisors (see below), whose sum is σ = 31010813568. Its totient is φ = 3937881024.

The previous prime is 11813643139. The next prime is 11813643181. The reversal of 11813643168 is 86134631811.

It is a tau number, because it is divible by the number of its divisors (24).

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61529296 + ... + 61529487.

It is an arithmetic number, because the mean of its divisors is an integer number (1292117232).

Almost surely, 2^11813643168 is an apocalyptic number.

It is an amenable number.

11813643168 is an abundant number, since it is smaller than the sum of its proper divisors (19197170400).

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

11813643168 is a wasteful number, since it uses less digits than its factorization.

11813643168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123058796 (or 123058788 counting only the distinct ones).

The product of its digits is 82944, while the sum is 42.

The spelling of 11813643168 in words is "eleven billion, eight hundred thirteen million, six hundred forty-three thousand, one hundred sixty-eight".