12589385209 has 2 divisors, whose sum is σ = 12589385210. Its totient is φ = 12589385208.

The previous prime is 12589385201. The next prime is 12589385239. The reversal of 12589385209 is 90258398521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12056698809 + 532686400 = 109803^2 + 23080^2 .

It is an emirp because it is prime and its reverse (90258398521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12589385209 - 2³ = 12589385201 is a prime.

It is not a weakly prime, because it can be changed into another prime (12589385201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6294692604 + 6294692605.

It is an arithmetic number, because the mean of its divisors is an integer number (6294692605).

Almost surely, 2^12589385209 is an apocalyptic number.

It is an amenable number.

12589385209 is a deficient number, since it is larger than the sum of its proper divisors (1).

12589385209 is an equidigital number, since it uses as much as digits as its factorization.

12589385209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1555200, while the sum is 52.

The spelling of 12589385209 in words is "twelve billion, five hundred eighty-nine million, three hundred eighty-five thousand, two hundred nine".