12568863805669 has 2 divisors, whose sum is σ = 12568863805670. Its totient is φ = 12568863805668.

The previous prime is 12568863805651. The next prime is 12568863805747. The reversal of 12568863805669 is 96650836886521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7779988083169 + 4788875722500 = 2789263^2 + 2188350^2 .

It is a cyclic number.

It is not a de Polignac number, because 12568863805669 - 2⁴³ = 3772770783461 is a prime.

It is a super-2 number, since 2×12568863805669² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12568863805639) 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, 6284431902834 + 6284431902835.

It is an arithmetic number, because the mean of its divisors is an integer number (6284431902835).

Almost surely, 2^{12568863805669} is an apocalyptic number.

It is an amenable number.

12568863805669 is a deficient number, since it is larger than the sum of its proper divisors (1).

12568863805669 is an equidigital number, since it uses as much as digits as its factorization.

12568863805669 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 895795200, while the sum is 73.

The spelling of 12568863805669 in words is "twelve trillion, five hundred sixty-eight billion, eight hundred sixty-three million, eight hundred five thousand, six hundred sixty-nine".