13078512856 has 32 divisors (see below), whose sum is σ = 24789473280. Its totient is φ = 6468311200.

The previous prime is 13078512847. The next prime is 13078512893. The reversal of 13078512856 is 65821587031.

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, 305865 + ... + 345991.

It is an arithmetic number, because the mean of its divisors is an integer number (774671040).

Almost surely, 2^13078512856 is an apocalyptic number.

It is an amenable number.

13078512856 is a deficient number, since it is larger than the sum of its proper divisors (11710960424).

13078512856 is a wasteful number, since it uses less digits than its factorization.

13078512856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40575 (or 40571 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 46.

It can be divided in two parts, 130785 and 12856, that added together give a square (143641 = 379²).

The spelling of 13078512856 in words is "thirteen billion, seventy-eight million, five hundred twelve thousand, eight hundred fifty-six".