12943776613 has 2 divisors, whose sum is σ = 12943776614. Its totient is φ = 12943776612.

The previous prime is 12943776607. The next prime is 12943776617. The reversal of 12943776613 is 31667734921.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12304799329 + 638977284 = 110927^2 + 25278^2 .

It is an emirp because it is prime and its reverse (31667734921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12943776613 - 2²⁹ = 12406905701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12943776617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6471888306 + 6471888307.

It is an arithmetic number, because the mean of its divisors is an integer number (6471888307).

Almost surely, 2^12943776613 is an apocalyptic number.

It is an amenable number.

12943776613 is a deficient number, since it is larger than the sum of its proper divisors (1).

12943776613 is an equidigital number, since it uses as much as digits as its factorization.

12943776613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1143072, while the sum is 49.

The spelling of 12943776613 in words is "twelve billion, nine hundred forty-three million, seven hundred seventy-six thousand, six hundred thirteen".