12804164609 has 4 divisors (see below), whose sum is σ = 12936166404. Its totient is φ = 12672162816.

The previous prime is 12804164603. The next prime is 12804164623. The reversal of 12804164609 is 90646140821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 90646140821 = 853 ⋅106267457.

It can be written as a sum of positive squares in 2 ways, for example, as 10276890625 + 2527273984 = 101375^2 + 50272^2 .

It is a cyclic number.

It is not a de Polignac number, because 12804164609 - 2²⁸ = 12535729153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12804164603) 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 in 3 ways as a sum of consecutive naturals, for example, 66000752 + ... + 66000945.

It is an arithmetic number, because the mean of its divisors is an integer number (3234041601).

Almost surely, 2^12804164609 is an apocalyptic number.

It is an amenable number.

12804164609 is a deficient number, since it is larger than the sum of its proper divisors (132001795).

12804164609 is an equidigital number, since it uses as much as digits as its factorization.

12804164609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132001794.

The product of its (nonzero) digits is 82944, while the sum is 41.

The spelling of 12804164609 in words is "twelve billion, eight hundred four million, one hundred sixty-four thousand, six hundred nine".