12636230689 has 4 divisors (see below), whose sum is σ = 12636485680. Its totient is φ = 12635975700.

The previous prime is 12636230681. The next prime is 12636230699. The reversal of 12636230689 is 98603263621.

It is a happy number.

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: 98603263621 = 15299 ⋅6445079.

It is a cyclic number.

It is not a de Polignac number, because 12636230689 - 2³ = 12636230681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12636230681) 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, 26487 + ... + 161164.

It is an arithmetic number, because the mean of its divisors is an integer number (3159121420).

Almost surely, 2^12636230689 is an apocalyptic number.

It is an amenable number.

12636230689 is a deficient number, since it is larger than the sum of its proper divisors (254991).

12636230689 is an equidigital number, since it uses as much as digits as its factorization.

12636230689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254990.

The product of its (nonzero) digits is 559872, while the sum is 46.

The spelling of 12636230689 in words is "twelve billion, six hundred thirty-six million, two hundred thirty thousand, six hundred eighty-nine".