12705859589 has 2 divisors, whose sum is σ = 12705859590. Its totient is φ = 12705859588.

The previous prime is 12705859577. The next prime is 12705859631. The reversal of 12705859589 is 98595850721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9517563364 + 3188296225 = 97558^2 + 56465^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12705859589 is a prime.

It is a super-2 number, since 2×12705859589² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12705859559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6352929794 + 6352929795.

It is an arithmetic number, because the mean of its divisors is an integer number (6352929795).

Almost surely, 2^12705859589 is an apocalyptic number.

It is an amenable number.

12705859589 is a deficient number, since it is larger than the sum of its proper divisors (1).

12705859589 is an equidigital number, since it uses as much as digits as its factorization.

12705859589 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072000, while the sum is 59.

The spelling of 12705859589 in words is "twelve billion, seven hundred five million, eight hundred fifty-nine thousand, five hundred eighty-nine".