18884520964608 has 640 divisors, whose sum is σ = 59643682560000. Its totient is φ = 5253696847872.

The previous prime is 18884520964577. The next prime is 18884520964609. The reversal of 18884520964608 is 80646902548881.

It is a Harshad number since it is a multiple of its sum of digits (69).

It is not an unprimeable number, because it can be changed into a prime (18884520964609) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4354279816 + ... + 4354284152.

It is an arithmetic number, because the mean of its divisors is an integer number (93193254000).

Almost surely, 2^{18884520964608} 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 18884520964608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29821841280000).

18884520964608 is an abundant number, since it is smaller than the sum of its proper divisors (40759161595392).

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

18884520964608 is a wasteful number, since it uses less digits than its factorization.

18884520964608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4912 (or 4896 counting only the distinct ones).

The product of its (nonzero) digits is 212336640, while the sum is 69.

The spelling of 18884520964608 in words is "eighteen trillion, eight hundred eighty-four billion, five hundred twenty million, nine hundred sixty-four thousand, six hundred eight".