12568863805639 has 2 divisors, whose sum is σ = 12568863805640. Its totient is φ = 12568863805638.

The previous prime is 12568863805621. The next prime is 12568863805651. The reversal of 12568863805639 is 93650836886521.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12568863805639 - 2²⁹ = 12568326934727 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12568863805669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6284431902819 + 6284431902820.

It is an arithmetic number, because the mean of its divisors is an integer number (6284431902820).

Almost surely, 2^{12568863805639} is an apocalyptic number.

12568863805639 is a deficient number, since it is larger than the sum of its proper divisors (1).

12568863805639 is an equidigital number, since it uses as much as digits as its factorization.

12568863805639 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 447897600, while the sum is 70.

The spelling of 12568863805639 in words is "twelve trillion, five hundred sixty-eight billion, eight hundred sixty-three million, eight hundred five thousand, six hundred thirty-nine".