18132701187920 has 80 divisors (see below), whose sum is σ = 46342201498560. Its totient is φ = 6543375820800.

The previous prime is 18132701187917. The next prime is 18132701187929. The reversal of 18132701187920 is 2978110723181.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18132701187929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78531065 + ... + 78761624.

It is an arithmetic number, because the mean of its divisors is an integer number (579277518732).

Almost surely, 2^{18132701187920} is an apocalyptic number.

18132701187920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18132701187920 is an abundant number, since it is smaller than the sum of its proper divisors (28209500310640).

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

18132701187920 is a wasteful number, since it uses less digits than its factorization.

18132701187920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157292844 (or 157292838 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 50.

The spelling of 18132701187920 in words is "eighteen trillion, one hundred thirty-two billion, seven hundred one million, one hundred eighty-seven thousand, nine hundred twenty".