11813395728 has 60 divisors (see below), whose sum is σ = 30762145680. Its totient is φ = 3906536256.

The previous prime is 11813395721. The next prime is 11813395729. The reversal of 11813395728 is 82759331811.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (11813395721) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 766563 + ... + 781821.

It is an arithmetic number, because the mean of its divisors is an integer number (512702428).

Almost surely, 2^11813395728 is an apocalyptic number.

It is an amenable number.

11813395728 is an abundant number, since it is smaller than the sum of its proper divisors (18948749952).

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

11813395728 is a wasteful number, since it uses less digits than its factorization.

11813395728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15524 (or 15391 counting only the distinct ones).

The product of its digits is 362880, while the sum is 48.

The spelling of 11813395728 in words is "eleven billion, eight hundred thirteen million, three hundred ninety-five thousand, seven hundred twenty-eight".