11856374784 has 88 divisors (see below), whose sum is σ = 35112927920. Its totient is φ = 3952115712.

The previous prime is 11856374779. The next prime is 11856374839. The reversal of 11856374784 is 48747365811.

11856374784 is a `hidden beast` number, since 1 + 1 + 8 + 563 + 7 + 4 + 78 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 11856374784.

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 7 ways as a sum of consecutive naturals, for example, 186769 + ... + 242064.

Almost surely, 2^11856374784 is an apocalyptic number.

It is an amenable number.

11856374784 is an abundant number, since it is smaller than the sum of its proper divisors (23256553136).

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

11856374784 is an equidigital number, since it uses as much as digits as its factorization.

11856374784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428862 (or 428838 counting only the distinct ones).

The product of its digits is 4515840, while the sum is 54.

The spelling of 11856374784 in words is "eleven billion, eight hundred fifty-six million, three hundred seventy-four thousand, seven hundred eighty-four".