12779027789165 has 16 divisors (see below), whose sum is σ = 16729322195520. Its totient is φ = 9293608897920.

The previous prime is 12779027789159. The next prime is 12779027789201. The reversal of 12779027789165 is 56198772097721.

It is not a de Polignac number, because 12779027789165 - 2²⁶ = 12778960680301 is a prime.

It is a congruent 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, 605000 + ... + 5091569.

It is an arithmetic number, because the mean of its divisors is an integer number (1045582637220).

Almost surely, 2^{12779027789165} is an apocalyptic number.

It is an amenable number.

12779027789165 is a deficient number, since it is larger than the sum of its proper divisors (3950294406355).

12779027789165 is a wasteful number, since it uses less digits than its factorization.

12779027789165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5737372.

The product of its (nonzero) digits is 186701760, while the sum is 71.

The spelling of 12779027789165 in words is "twelve trillion, seven hundred seventy-nine billion, twenty-seven million, seven hundred eighty-nine thousand, one hundred sixty-five".