18023253937920 has 1296 divisors, whose sum is σ = 80338391917056. Its totient is φ = 3624110899200.

The previous prime is 18023253937903. The next prime is 18023253937939. The reversal of 18023253937920 is 2973935232081.

18023253937920 is a `hidden beast` number, since 1 + 8 + 0 + 2 + 32 + 539 + 3 + 79 + 2 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 852434869 + ... + 852456011.

It is an arithmetic number, because the mean of its divisors is an integer number (61989499936).

Almost surely, 2^{18023253937920} is an apocalyptic number.

18023253937920 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 18023253937920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40169195958528).

18023253937920 is an abundant number, since it is smaller than the sum of its proper divisors (62315137979136).

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

18023253937920 is a wasteful number, since it uses less digits than its factorization.

18023253937920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21250 (or 21202 counting only the distinct ones).

The product of its (nonzero) digits is 4898880, while the sum is 54.

The spelling of 18023253937920 in words is "eighteen trillion, twenty-three billion, two hundred fifty-three million, nine hundred thirty-seven thousand, nine hundred twenty".