18241878459120 has 80 divisors (see below), whose sum is σ = 56570547065760. Its totient is φ = 4862718226432.

The previous prime is 18241878459109. The next prime is 18241878459157. The reversal of 18241878459120 is 2195487814281.

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

It is a super-2 number, since 2×18241878459120² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13270989 + ... + 14580908.

It is an arithmetic number, because the mean of its divisors is an integer number (707131838322).

Almost surely, 2^{18241878459120} is an apocalyptic number.

18241878459120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18241878459120 is an abundant number, since it is smaller than the sum of its proper divisors (38328668606640).

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

18241878459120 is a wasteful number, since it uses less digits than its factorization.

18241878459120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27854642 (or 27854636 counting only the distinct ones).

The product of its (nonzero) digits is 10321920, while the sum is 60.

The spelling of 18241878459120 in words is "eighteen trillion, two hundred forty-one billion, eight hundred seventy-eight million, four hundred fifty-nine thousand, one hundred twenty".