12776276369 has 2 divisors, whose sum is σ = 12776276370. Its totient is φ = 12776276368.

The previous prime is 12776276351. The next prime is 12776276389. The reversal of 12776276369 is 96367267721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11543353600 + 1232922769 = 107440^2 + 35113^2 .

It is a cyclic number.

It is not a de Polignac number, because 12776276369 - 2²⁰ = 12775227793 is a prime.

It is a super-2 number, since 2×12776276369² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12776276389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6388138184 + 6388138185.

It is an arithmetic number, because the mean of its divisors is an integer number (6388138185).

Almost surely, 2^12776276369 is an apocalyptic number.

It is an amenable number.

12776276369 is a deficient number, since it is larger than the sum of its proper divisors (1).

12776276369 is an equidigital number, since it uses as much as digits as its factorization.

12776276369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8001504, while the sum is 56.

The spelling of 12776276369 in words is "twelve billion, seven hundred seventy-six million, two hundred seventy-six thousand, three hundred sixty-nine".