12706272779 has 2 divisors, whose sum is σ = 12706272780. Its totient is φ = 12706272778.

The previous prime is 12706272769. The next prime is 12706272809. The reversal of 12706272779 is 97727260721.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12706272779 - 2²⁴ = 12689495563 is a prime.

It is a super-2 number, since 2×12706272779² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12706272739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6353136389 + 6353136390.

It is an arithmetic number, because the mean of its divisors is an integer number (6353136390).

Almost surely, 2^12706272779 is an apocalyptic number.

12706272779 is a deficient number, since it is larger than the sum of its proper divisors (1).

12706272779 is an equidigital number, since it uses as much as digits as its factorization.

12706272779 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1037232, while the sum is 50.

The spelling of 12706272779 in words is "twelve billion, seven hundred six million, two hundred seventy-two thousand, seven hundred seventy-nine".