12532561878 has 16 divisors (see below), whose sum is σ = 25346755440. Its totient is φ = 4130582016.

The previous prime is 12532561831. The next prime is 12532561883. The reversal of 12532561878 is 87816523521.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11734075 + ... + 11735142.

It is an arithmetic number, because the mean of its divisors is an integer number (1584172215).

Almost surely, 2^12532561878 is an apocalyptic number.

12532561878 is an abundant number, since it is smaller than the sum of its proper divisors (12814193562).

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

12532561878 is a wasteful number, since it uses less digits than its factorization.

12532561878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23469311.

The product of its digits is 806400, while the sum is 48.

The spelling of 12532561878 in words is "twelve billion, five hundred thirty-two million, five hundred sixty-one thousand, eight hundred seventy-eight".