636045436023163 has 4 divisors (see below), whose sum is σ = 636984941837760. Its totient is φ = 635105930208568.

The previous prime is 636045436023037. The next prime is 636045436023169. The reversal of 636045436023163 is 361320634540636.

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 636045436023163 - 2¹³ = 636045436014971 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 636045436023163.

It is not an unprimeable number, because it can be changed into a prime (636045436023169) 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, 469752906283 + ... + 469752907636.

It is an arithmetic number, because the mean of its divisors is an integer number (159246235459440).

Almost surely, 2^{636045436023163} is an apocalyptic number.

636045436023163 is a deficient number, since it is larger than the sum of its proper divisors (939505814597).

636045436023163 is an equidigital number, since it uses as much as digits as its factorization.

636045436023163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 939505814596.

The product of its (nonzero) digits is 16796160, while the sum is 52.

The spelling of 636045436023163 in words is "six hundred thirty-six trillion, forty-five billion, four hundred thirty-six million, twenty-three thousand, one hundred sixty-three".