12860978312 has 64 divisors (see below), whose sum is σ = 31425045120. Its totient is φ = 4788569088.

The previous prime is 12860978279. The next prime is 12860978323. The reversal of 12860978312 is 21387906821.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 507218 + ... + 531969.

It is an arithmetic number, because the mean of its divisors is an integer number (491016330).

Almost surely, 2^12860978312 is an apocalyptic number.

It is an amenable number.

12860978312 is an abundant number, since it is smaller than the sum of its proper divisors (18564066808).

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

12860978312 is a wasteful number, since it uses less digits than its factorization.

12860978312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1039230 (or 1039226 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 47.

The spelling of 12860978312 in words is "twelve billion, eight hundred sixty million, nine hundred seventy-eight thousand, three hundred twelve".