12867556423693 has 2 divisors, whose sum is σ = 12867556423694. Its totient is φ = 12867556423692.

The previous prime is 12867556423619. The next prime is 12867556423697. The reversal of 12867556423693 is 39632465576821.

12867556423693 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6893843625769 + 5973712797924 = 2625613^2 + 2444118^2 .

It is a cyclic number.

It is not a de Polignac number, because 12867556423693 - 2²⁵ = 12867522869261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12867556423697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6433778211846 + 6433778211847.

It is an arithmetic number, because the mean of its divisors is an integer number (6433778211847).

Almost surely, 2^{12867556423693} is an apocalyptic number.

It is an amenable number.

12867556423693 is a deficient number, since it is larger than the sum of its proper divisors (1).

12867556423693 is an equidigital number, since it uses as much as digits as its factorization.

12867556423693 is an evil number, because the sum of its binary digits is even.

The product of its digits is 391910400, while the sum is 67.

The spelling of 12867556423693 in words is "twelve trillion, eight hundred sixty-seven billion, five hundred fifty-six million, four hundred twenty-three thousand, six hundred ninety-three".