12665586239 has 2 divisors, whose sum is σ = 12665586240. Its totient is φ = 12665586238.

The previous prime is 12665586209. The next prime is 12665586259. The reversal of 12665586239 is 93268556621.

It is a strong prime.

It is an emirp because it is prime and its reverse (93268556621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12665586239 - 2³² = 8370618943 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12665586209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6332793119 + 6332793120.

It is an arithmetic number, because the mean of its divisors is an integer number (6332793120).

Almost surely, 2^12665586239 is an apocalyptic number.

12665586239 is a deficient number, since it is larger than the sum of its proper divisors (1).

12665586239 is an equidigital number, since it uses as much as digits as its factorization.

12665586239 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4665600, while the sum is 53.

The spelling of 12665586239 in words is "twelve billion, six hundred sixty-five million, five hundred eighty-six thousand, two hundred thirty-nine".