12873169409 has 4 divisors (see below), whose sum is σ = 12877531716. Its totient is φ = 12868807104.

The previous prime is 12873169367. The next prime is 12873169433. The reversal of 12873169409 is 90496137821.

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 8042502400 + 4830667009 = 89680^2 + 69503^2 .

It is a cyclic number.

It is not a de Polignac number, because 12873169409 - 2¹² = 12873165313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12873169459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2176724 + ... + 2182629.

It is an arithmetic number, because the mean of its divisors is an integer number (3219382929).

Almost surely, 2^12873169409 is an apocalyptic number.

It is an amenable number.

12873169409 is a deficient number, since it is larger than the sum of its proper divisors (4362307).

12873169409 is an equidigital number, since it uses as much as digits as its factorization.

12873169409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4362306.

The product of its (nonzero) digits is 653184, while the sum is 50.

The spelling of 12873169409 in words is "twelve billion, eight hundred seventy-three million, one hundred sixty-nine thousand, four hundred nine".