18051923968000 has 608 divisors, whose sum is σ = 50125393963008. Its totient is φ = 6445596672000.

The previous prime is 18051923967997. The next prime is 18051923968019. The reversal of 18051923968000 is 86932915081.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13205503317 + ... + 13205504683.

It is an arithmetic number, because the mean of its divisors is an integer number (82443082176).

Almost surely, 2^{18051923968000} is an apocalyptic number.

18051923968000 is a gapful number since it is divisible by the number (10) 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 18051923968000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25062696981504).

18051923968000 is an abundant number, since it is smaller than the sum of its proper divisors (32073469995008).

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

18051923968000 is an frugal number, since it uses more digits than its factorization.

18051923968000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1462 (or 1418 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 52.

The spelling of 18051923968000 in words is "eighteen trillion, fifty-one billion, nine hundred twenty-three million, nine hundred sixty-eight thousand".