636622116684 has 24 divisors (see below), whose sum is σ = 1485731869440. Its totient is φ = 212167334544.

The previous prime is 636622116671. The next prime is 636622116727. The reversal of 636622116684 is 486611226636.

It is a super-2 number, since 2×636622116684² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4938424 + ... + 5065695.

It is an arithmetic number, because the mean of its divisors is an integer number (61905494560).

Almost surely, 2^636622116684 is an apocalyptic number.

It is an amenable number.

636622116684 is an abundant number, since it is smaller than the sum of its proper divisors (849109752756).

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

636622116684 is a wasteful number, since it uses less digits than its factorization.

636622116684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10009429 (or 10009427 counting only the distinct ones).

The product of its digits is 2985984, while the sum is 51.

The spelling of 636622116684 in words is "six hundred thirty-six billion, six hundred twenty-two million, one hundred sixteen thousand, six hundred eighty-four".