12402663781567 has 2 divisors, whose sum is σ = 12402663781568. Its totient is φ = 12402663781566.

The previous prime is 12402663781537. The next prime is 12402663781589. The reversal of 12402663781567 is 76518736620421.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12402663781567 - 2²⁷ = 12402529563839 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12402663781537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6201331890783 + 6201331890784.

It is an arithmetic number, because the mean of its divisors is an integer number (6201331890784).

Almost surely, 2^{12402663781567} is an apocalyptic number.

12402663781567 is a deficient number, since it is larger than the sum of its proper divisors (1).

12402663781567 is an equidigital number, since it uses as much as digits as its factorization.

12402663781567 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20321280, while the sum is 58.

The spelling of 12402663781567 in words is "twelve trillion, four hundred two billion, six hundred sixty-three million, seven hundred eighty-one thousand, five hundred sixty-seven".