18032017920000 has 520 divisors, whose sum is σ = 68663241679296. Its totient is φ = 4121591808000.

The previous prime is 18032017919977. The next prime is 18032017920029. The reversal of 18032017920000 is 2971023081.

It is a super-2 number, since 2×18032017920000² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 53592292 + ... + 53927708.

Almost surely, 2^{18032017920000} is an apocalyptic number.

18032017920000 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 18032017920000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34331620839648).

18032017920000 is an abundant number, since it is smaller than the sum of its proper divisors (50631223759296).

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

18032017920000 is an frugal number, since it uses more digits than its factorization.

18032017920000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335471 (or 335434 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 33.

Adding to 18032017920000 its reverse (2971023081), we get a palindrome (18034988943081).

The spelling of 18032017920000 in words is "eighteen trillion, thirty-two billion, seventeen million, nine hundred twenty thousand".