18222039983628 has 240 divisors, whose sum is σ = 53090566452000. Its totient is φ = 5411274688512.

The previous prime is 18222039983569. The next prime is 18222039983629. The reversal of 18222039983628 is 82638993022281.

18222039983628 is a `hidden beast` number, since 18 + 2 + 220 + 39 + 9 + 8 + 362 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (18222039983629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 318655543 + ... + 318712721.

It is an arithmetic number, because the mean of its divisors is an integer number (221210693550).

Almost surely, 2^{18222039983628} is an apocalyptic number.

18222039983628 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18222039983628, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26545283226000).

18222039983628 is an abundant number, since it is smaller than the sum of its proper divisors (34868526468372).

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

18222039983628 is a wasteful number, since it uses less digits than its factorization.

18222039983628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59846 (or 59835 counting only the distinct ones).

The product of its (nonzero) digits is 35831808, while the sum is 63.

The spelling of 18222039983628 in words is "eighteen trillion, two hundred twenty-two billion, thirty-nine million, nine hundred eighty-three thousand, six hundred twenty-eight".