11526978894 has 16 divisors (see below), whose sum is σ = 24410073168. Its totient is φ = 3616307072.

The previous prime is 11526978893. The next prime is 11526978901. The reversal of 11526978894 is 49887962511.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11526978893) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56504697 + ... + 56504900.

It is an arithmetic number, because the mean of its divisors is an integer number (1525629573).

Almost surely, 2^11526978894 is an apocalyptic number.

11526978894 is an abundant number, since it is smaller than the sum of its proper divisors (12883094274).

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

11526978894 is a wasteful number, since it uses less digits than its factorization.

11526978894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113009619.

The product of its digits is 8709120, while the sum is 60.

The spelling of 11526978894 in words is "eleven billion, five hundred twenty-six million, nine hundred seventy-eight thousand, eight hundred ninety-four".