12779366912 has 80 divisors (see below), whose sum is σ = 27668958240. Its totient is φ = 5861486592.

The previous prime is 12779366903. The next prime is 12779366923. The reversal of 12779366912 is 21966397721.

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, 1079039 + ... + 1090817.

It is an arithmetic number, because the mean of its divisors is an integer number (345861978).

Almost surely, 2^12779366912 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12779366912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13834479120).

12779366912 is an abundant number, since it is smaller than the sum of its proper divisors (14889591328).

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

12779366912 is a wasteful number, since it uses less digits than its factorization.

12779366912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11973 (or 11957 counting only the distinct ones).

The product of its digits is 1714608, while the sum is 53.

The spelling of 12779366912 in words is "twelve billion, seven hundred seventy-nine million, three hundred sixty-six thousand, nine hundred twelve".