636846317304036 has 384 divisors, whose sum is σ = 1824287807913984. Its totient is φ = 168779281858560.

The previous prime is 636846317304017. The next prime is 636846317304037. The reversal of 636846317304036 is 630403713648636.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (636846317304037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 136750334220 + ... + 136750338876.

It is an arithmetic number, because the mean of its divisors is an integer number (4750749499776).

Almost surely, 2^{636846317304036} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 636846317304036, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (912143903956992).

636846317304036 is an abundant number, since it is smaller than the sum of its proper divisors (1187441490609948).

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

636846317304036 is a wasteful number, since it uses less digits than its factorization.

636846317304036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8699 (or 8697 counting only the distinct ones).

The product of its (nonzero) digits is 94058496, while the sum is 60.

The spelling of 636846317304036 in words is "six hundred thirty-six trillion, eight hundred forty-six billion, three hundred seventeen million, three hundred four thousand, thirty-six".