11256678864 has 50 divisors (see below), whose sum is σ = 32580098210. Its totient is φ = 3752225856.

The previous prime is 11256678833. The next prime is 11256678893. The reversal of 11256678864 is 46887665211.

11256678864 is a `hidden beast` number, since 1 + 1 + 2 + 566 + 78 + 8 + 6 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 11255512464 + 1166400 = 106092^2 + 1080^2 .

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 11256678864.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 4341559 + ... + 4344150.

Almost surely, 2^11256678864 is an apocalyptic number.

It is an amenable number.

11256678864 is an abundant number, since it is smaller than the sum of its proper divisors (21323419346).

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

11256678864 is an equidigital number, since it uses as much as digits as its factorization.

11256678864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8685729 (or 8685714 counting only the distinct ones).

The product of its digits is 3870720, while the sum is 54.

The spelling of 11256678864 in words is "eleven billion, two hundred fifty-six million, six hundred seventy-eight thousand, eight hundred sixty-four".