12563615256 has 16 divisors (see below), whose sum is σ = 31409038200. Its totient is φ = 4187871744.

The previous prime is 12563615249. The next prime is 12563615329. The reversal of 12563615256 is 65251636521.

12563615256 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 3 ways as a sum of consecutive naturals, for example, 261741961 + ... + 261742008.

Almost surely, 2^12563615256 is an apocalyptic number.

It is an amenable number.

12563615256 is an abundant number, since it is smaller than the sum of its proper divisors (18845422944).

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

12563615256 is a wasteful number, since it uses less digits than its factorization.

12563615256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 523483978 (or 523483974 counting only the distinct ones).

The product of its digits is 324000, while the sum is 42.

The spelling of 12563615256 in words is "twelve billion, five hundred sixty-three million, six hundred fifteen thousand, two hundred fifty-six".