18000111900672 has 480 divisors, whose sum is σ = 60016986469440. Its totient is φ = 5327705456640.

The previous prime is 18000111900671. The next prime is 18000111900691. The reversal of 18000111900672 is 27600911100081.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18000111900671) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 78350323 + ... + 78579725.

It is an arithmetic number, because the mean of its divisors is an integer number (125035388478).

Almost surely, 2^{18000111900672} is an apocalyptic number.

18000111900672 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 18000111900672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30008493234720).

18000111900672 is an abundant number, since it is smaller than the sum of its proper divisors (42016874568768).

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

18000111900672 is a wasteful number, since it uses less digits than its factorization.

18000111900672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229491 (or 229462 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 36.

The spelling of 18000111900672 in words is "eighteen trillion, one hundred eleven million, nine hundred thousand, six hundred seventy-two".