18701872018720 has 48 divisors (see below), whose sum is σ = 48199824707328. Its totient is φ = 6800680733440.

The previous prime is 18701872018703. The next prime is 18701872018727. The reversal of 18701872018720 is 2781027810781.

It is not an unprimeable number, because it can be changed into a prime (18701872018727) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5313030064 + ... + 5313033583.

It is an arithmetic number, because the mean of its divisors is an integer number (1004163014736).

Almost surely, 2^{18701872018720} is an apocalyptic number.

18701872018720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18701872018720 is an abundant number, since it is smaller than the sum of its proper divisors (29497952688608).

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

18701872018720 is a wasteful number, since it uses less digits than its factorization.

18701872018720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10626063673 (or 10626063665 counting only the distinct ones).

The product of its (nonzero) digits is 702464, while the sum is 52.

The spelling of 18701872018720 in words is "eighteen trillion, seven hundred one billion, eight hundred seventy-two million, eighteen thousand, seven hundred twenty".