8636622799392 has 480 divisors, whose sum is σ = 30321439948800. Its totient is φ = 2357929170432.

The previous prime is 8636622799349. The next prime is 8636622799429. The reversal of 8636622799392 is 2939972266368.

8636622799392 is a `hidden beast` number, since 8 + 6 + 3 + 6 + 6 + 227 + 9 + 9 + 392 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 8636622799392.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 433577209 + ... + 433597127.

It is an arithmetic number, because the mean of its divisors is an integer number (63169666560).

Almost surely, 2^{8636622799392} 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 8636622799392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15160719974400).

8636622799392 is an abundant number, since it is smaller than the sum of its proper divisors (21684817149408).

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

8636622799392 is a wasteful number, since it uses less digits than its factorization.

8636622799392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21010 (or 20993 counting only the distinct ones).

The product of its digits is 634894848, while the sum is 72.

The spelling of 8636622799392 in words is "eight trillion, six hundred thirty-six billion, six hundred twenty-two million, seven hundred ninety-nine thousand, three hundred ninety-two".