636164245466622 has 80 divisors (see below), whose sum is σ = 1460424202210512. Its totient is φ = 206857565665920.

The previous prime is 636164245466587. The next prime is 636164245466639. The reversal of 636164245466622 is 226664542461636.

It is a self number, because there is not a number n which added to its sum of digits gives 636164245466622.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 48940288 + ... + 60559724.

Almost surely, 2^{636164245466622} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 636164245466622, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (730212101105256).

636164245466622 is an abundant number, since it is smaller than the sum of its proper divisors (824259956743890).

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

636164245466622 is a wasteful number, since it uses less digits than its factorization.

636164245466622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11627735 (or 11627726 counting only the distinct ones).

The product of its digits is 358318080, while the sum is 63.

The spelling of 636164245466622 in words is "six hundred thirty-six trillion, one hundred sixty-four billion, two hundred forty-five million, four hundred sixty-six thousand, six hundred twenty-two".