12998339609 has 2 divisors, whose sum is σ = 12998339610. Its totient is φ = 12998339608.

The previous prime is 12998339539. The next prime is 12998339633. The reversal of 12998339609 is 90693389921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12600736009 + 397603600 = 112253^2 + 19940^2 .

It is an emirp because it is prime and its reverse (90693389921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12998339609 - 2¹² = 12998335513 is a prime.

It is not a weakly prime, because it can be changed into another prime (12998339659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6499169804 + 6499169805.

It is an arithmetic number, because the mean of its divisors is an integer number (6499169805).

Almost surely, 2^12998339609 is an apocalyptic number.

It is an amenable number.

12998339609 is a deficient number, since it is larger than the sum of its proper divisors (1).

12998339609 is an equidigital number, since it uses as much as digits as its factorization.

12998339609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5668704, while the sum is 59.

The spelling of 12998339609 in words is "twelve billion, nine hundred ninety-eight million, three hundred thirty-nine thousand, six hundred nine".