12779797592756 has 6 divisors (see below), whose sum is σ = 22364645787330. Its totient is φ = 6389898796376.

The previous prime is 12779797592729. The next prime is 12779797592789. The reversal of 12779797592756 is 65729579797721.

It can be written as a sum of positive squares in only one way, i.e., 7778688340900 + 5001109251856 = 2789030^2 + 2236316^2 .

It is a super-3 number, since 3×12779797592756³ (a number of 40 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1597474699091 + ... + 1597474699098.

It is an arithmetic number, because the mean of its divisors is an integer number (3727440964555).

Almost surely, 2^{12779797592756} is an apocalyptic number.

It is an amenable number.

12779797592756 is a deficient number, since it is larger than the sum of its proper divisors (9584848194574).

12779797592756 is a wasteful number, since it uses less digits than its factorization.

12779797592756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3194949398193 (or 3194949398191 counting only the distinct ones).

The product of its digits is 7351381800, while the sum is 83.

The spelling of 12779797592756 in words is "twelve trillion, seven hundred seventy-nine billion, seven hundred ninety-seven million, five hundred ninety-two thousand, seven hundred fifty-six".