636113613323 has 4 divisors (see below), whose sum is σ = 639667320840. Its totient is φ = 632559905808.

The previous prime is 636113613319. The next prime is 636113613337. The reversal of 636113613323 is 323316311636.

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 636113613323 - 2² = 636113613319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (636113613923) 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, 1776853490 + ... + 1776853847.

It is an arithmetic number, because the mean of its divisors is an integer number (159916830210).

Almost surely, 2^636113613323 is an apocalyptic number.

636113613323 is a deficient number, since it is larger than the sum of its proper divisors (3553707517).

636113613323 is a wasteful number, since it uses less digits than its factorization.

636113613323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3553707516.

The product of its digits is 104976, while the sum is 38.

Adding to 636113613323 its reverse (323316311636), we get a palindrome (959429924959).

The spelling of 636113613323 in words is "six hundred thirty-six billion, one hundred thirteen million, six hundred thirteen thousand, three hundred twenty-three".