12765266279 has 4 divisors (see below), whose sum is σ = 12777413160. Its totient is φ = 12753119400.

The previous prime is 12765266263. The next prime is 12765266281. The reversal of 12765266279 is 97266256721.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12765266279 - 2⁴ = 12765266263 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12765266279.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12765266209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6071864 + ... + 6073965.

It is an arithmetic number, because the mean of its divisors is an integer number (3194353290).

Almost surely, 2^12765266279 is an apocalyptic number.

12765266279 is a deficient number, since it is larger than the sum of its proper divisors (12146881).

12765266279 is a wasteful number, since it uses less digits than its factorization.

12765266279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12146880.

The product of its digits is 3810240, while the sum is 53.

The spelling of 12765266279 in words is "twelve billion, seven hundred sixty-five million, two hundred sixty-six thousand, two hundred seventy-nine".