636713317636 has 48 divisors (see below), whose sum is σ = 1283687919360. Its totient is φ = 273289554720.

The previous prime is 636713317631. The next prime is 636713317657.

It is a happy number.

636713317636 is nontrivially palindromic in base 10.

It is not an unprimeable number, because it can be changed into a prime (636713317631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 983770 + ... + 1497073.

It is an arithmetic number, because the mean of its divisors is an integer number (26743498320).

Almost surely, 2^636713317636 is an apocalyptic number.

It is an amenable number.

636713317636 is an abundant number, since it is smaller than the sum of its proper divisors (646974601724).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

636713317636 is a wasteful number, since it uses less digits than its factorization.

636713317636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2481184 (or 2481182 counting only the distinct ones).

The product of its digits is 5143824, while the sum is 52.

The spelling of 636713317636 in words is "six hundred thirty-six billion, seven hundred thirteen million, three hundred seventeen thousand, six hundred thirty-six".