18000216039672 has 128 divisors (see below), whose sum is σ = 51622917427200. Its totient is φ = 5805464400000.

The previous prime is 18000216039613. The next prime is 18000216039679. The reversal of 18000216039672 is 27693061200081.

18000216039672 is a `hidden beast` number, since 18 + 0 + 0 + 0 + 21 + 603 + 9 + 6 + 7 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18000216039679) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36967797 + ... + 37451547.

It is an arithmetic number, because the mean of its divisors is an integer number (403304042400).

Almost surely, 2^{18000216039672} is an apocalyptic number.

18000216039672 is a gapful number since it is divisible by the number (12) 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 18000216039672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25811458713600).

18000216039672 is an abundant number, since it is smaller than the sum of its proper divisors (33622701387528).

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

18000216039672 is a wasteful number, since it uses less digits than its factorization.

18000216039672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 489354 (or 489344 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The spelling of 18000216039672 in words is "eighteen trillion, two hundred sixteen million, thirty-nine thousand, six hundred seventy-two".