11813936344 has 128 divisors (see below), whose sum is σ = 27184896000. Its totient is φ = 4698279936.

The previous prime is 11813936297. The next prime is 11813936357. The reversal of 11813936344 is 44363931811.

It is a self number, because there is not a number n which added to its sum of digits gives 11813936344.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31171147 + ... + 31171525.

It is an arithmetic number, because the mean of its divisors is an integer number (212382000).

Almost surely, 2^11813936344 is an apocalyptic number.

11813936344 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11813936344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13592448000).

11813936344 is an abundant number, since it is smaller than the sum of its proper divisors (15370959656).

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

11813936344 is a wasteful number, since it uses less digits than its factorization.

11813936344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 785 (or 781 counting only the distinct ones).

The product of its digits is 186624, while the sum is 43.

The spelling of 11813936344 in words is "eleven billion, eight hundred thirteen million, nine hundred thirty-six thousand, three hundred forty-four".