12936988609 has 4 divisors (see below), whose sum is σ = 12937709104. Its totient is φ = 12936268116.

The previous prime is 12936988601. The next prime is 12936988637. The reversal of 12936988609 is 90688963921.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 90688963921 = 71 ⋅1277309351.

It is a cyclic number.

It is not a de Polignac number, because 12936988609 - 2³ = 12936988601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12936988601) 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, 332607 + ... + 369460.

It is an arithmetic number, because the mean of its divisors is an integer number (3234427276).

Almost surely, 2^12936988609 is an apocalyptic number.

It is an amenable number.

12936988609 is a deficient number, since it is larger than the sum of its proper divisors (720495).

12936988609 is an equidigital number, since it uses as much as digits as its factorization.

12936988609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 720494.

The product of its (nonzero) digits is 10077696, while the sum is 61.

The spelling of 12936988609 in words is "twelve billion, nine hundred thirty-six million, nine hundred eighty-eight thousand, six hundred nine".