12768530856 has 16 divisors (see below), whose sum is σ = 31921327200. Its totient is φ = 4256176944.

The previous prime is 12768530777. The next prime is 12768530921. The reversal of 12768530856 is 65803586721.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12768530799 and 12768530808.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 266011036 + ... + 266011083.

It is an arithmetic number, because the mean of its divisors is an integer number (1995082950).

Almost surely, 2^12768530856 is an apocalyptic number.

It is an amenable number.

12768530856 is an abundant number, since it is smaller than the sum of its proper divisors (19152796344).

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

12768530856 is a wasteful number, since it uses less digits than its factorization.

12768530856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532022128 (or 532022124 counting only the distinct ones).

The product of its (nonzero) digits is 2419200, while the sum is 51.

The spelling of 12768530856 in words is "twelve billion, seven hundred sixty-eight million, five hundred thirty thousand, eight hundred fifty-six".