12779120869 has 8 divisors (see below), whose sum is σ = 12899084000. Its totient is φ = 12659207472.

The previous prime is 12779120857. The next prime is 12779120899. The reversal of 12779120869 is 96802197721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12779120869 - 2⁹ = 12779120357 is a prime.

It is a super-2 number, since 2×12779120869² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12779120839) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 686122 + ... + 704500.

It is an arithmetic number, because the mean of its divisors is an integer number (1612385500).

Almost surely, 2^12779120869 is an apocalyptic number.

It is an amenable number.

12779120869 is a deficient number, since it is larger than the sum of its proper divisors (119963131).

12779120869 is a wasteful number, since it uses less digits than its factorization.

12779120869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24867.

The product of its (nonzero) digits is 762048, while the sum is 52.

The spelling of 12779120869 in words is "twelve billion, seven hundred seventy-nine million, one hundred twenty thousand, eight hundred sixty-nine".