18000333003156 has 192 divisors, whose sum is σ = 49020357980160. Its totient is φ = 5034493393920.

The previous prime is 18000333003113. The next prime is 18000333003181. The reversal of 18000333003156 is 65130033300081.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1619749056 + ... + 1619760168.

It is an arithmetic number, because the mean of its divisors is an integer number (255314364480).

Almost surely, 2^{18000333003156} 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 18000333003156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24510178990080).

18000333003156 is an abundant number, since it is smaller than the sum of its proper divisors (31020024977004).

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

18000333003156 is a wasteful number, since it uses less digits than its factorization.

18000333003156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12534 (or 12532 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 33.

The spelling of 18000333003156 in words is "eighteen trillion, three hundred thirty-three million, three thousand, one hundred fifty-six".