12584304809 has 4 divisors (see below), whose sum is σ = 12584584404. Its totient is φ = 12584025216.

The previous prime is 12584304773. The next prime is 12584304823. The reversal of 12584304809 is 90840348521.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4784765584 + 7799539225 = 69172^2 + 88315^2 .

It is a cyclic number.

It is not a de Polignac number, because 12584304809 - 2²⁸ = 12315869353 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12584304809.

It is not an unprimeable number, because it can be changed into a prime (12584304869) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55232 + ... + 167985.

It is an arithmetic number, because the mean of its divisors is an integer number (3146146101).

Almost surely, 2^12584304809 is an apocalyptic number.

It is an amenable number.

12584304809 is a deficient number, since it is larger than the sum of its proper divisors (279595).

12584304809 is an equidigital number, since it uses as much as digits as its factorization.

12584304809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279594.

The product of its (nonzero) digits is 276480, while the sum is 44.

The spelling of 12584304809 in words is "twelve billion, five hundred eighty-four million, three hundred four thousand, eight hundred nine".