12635164499 has 4 divisors (see below), whose sum is σ = 12655980864. Its totient is φ = 12614348136.

The previous prime is 12635164459. The next prime is 12635164513. The reversal of 12635164499 is 99446153621.

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

It is a cyclic number.

It is not a de Polignac number, because 12635164499 - 2¹⁶ = 12635098963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12635164429) 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, 10407272 + ... + 10408485.

It is an arithmetic number, because the mean of its divisors is an integer number (3163995216).

Almost surely, 2^12635164499 is an apocalyptic number.

12635164499 is a deficient number, since it is larger than the sum of its proper divisors (20816365).

12635164499 is an equidigital number, since it uses as much as digits as its factorization.

12635164499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20816364.

The product of its digits is 1399680, while the sum is 50.

The spelling of 12635164499 in words is "twelve billion, six hundred thirty-five million, one hundred sixty-four thousand, four hundred ninety-nine".