18081924804140 has 48 divisors (see below), whose sum is σ = 38062685186400. Its totient is φ = 7215507164160.

The previous prime is 18081924804071. The next prime is 18081924804149. The reversal of 18081924804140 is 4140842918081.

It is a super-2 number, since 2×18081924804140² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18081924804149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 122456555 + ... + 122604125.

It is an arithmetic number, because the mean of its divisors is an integer number (792972608050).

Almost surely, 2^{18081924804140} is an apocalyptic number.

18081924804140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18081924804140 is an abundant number, since it is smaller than the sum of its proper divisors (19980760382260).

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

18081924804140 is a wasteful number, since it uses less digits than its factorization.

18081924804140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162162 (or 162160 counting only the distinct ones).

The product of its (nonzero) digits is 589824, while the sum is 50.

The spelling of 18081924804140 in words is "eighteen trillion, eighty-one billion, nine hundred twenty-four million, eight hundred four thousand, one hundred forty".