12777804977676 has 12 divisors (see below), whose sum is σ = 29814878281272. Its totient is φ = 4259268325888.

The previous prime is 12777804977669. The next prime is 12777804977687. The reversal of 12777804977676 is 67677940877721.

It is a tau number, because it is divible by the number of its divisors (12).

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, 532408540725 + ... + 532408540748.

It is an arithmetic number, because the mean of its divisors is an integer number (2484573190106).

Almost surely, 2^{12777804977676} is an apocalyptic number.

It is an amenable number.

12777804977676 is an abundant number, since it is smaller than the sum of its proper divisors (17037073303596).

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

12777804977676 is a wasteful number, since it uses less digits than its factorization.

12777804977676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1064817081480 (or 1064817081478 counting only the distinct ones).

The product of its (nonzero) digits is 2439569664, while the sum is 78.

The spelling of 12777804977676 in words is "twelve trillion, seven hundred seventy-seven billion, eight hundred four million, nine hundred seventy-seven thousand, six hundred seventy-six".