12539816256 has 112 divisors (see below), whose sum is σ = 36246011328. Its totient is φ = 3794534400.

The previous prime is 12539816243. The next prime is 12539816321. The reversal of 12539816256 is 65261893521.

12539816256 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1628736 + ... + 1636416.

Almost surely, 2^12539816256 is an apocalyptic number.

12539816256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12539816256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18123005664).

12539816256 is an abundant number, since it is smaller than the sum of its proper divisors (23706195072).

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

12539816256 is a wasteful number, since it uses less digits than its factorization.

12539816256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8480 (or 8470 counting only the distinct ones).

The product of its digits is 777600, while the sum is 48.

The spelling of 12539816256 in words is "twelve billion, five hundred thirty-nine million, eight hundred sixteen thousand, two hundred fifty-six".