218500272385180 has 24 divisors (see below), whose sum is σ = 459456715464768. Its totient is φ = 87284653057728.

The previous prime is 218500272385147. The next prime is 218500272385189. The reversal of 218500272385180 is 81583272005812.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (218500272385189) 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, 7215978004 + ... + 7216008283.

It is an arithmetic number, because the mean of its divisors is an integer number (19144029811032).

Almost surely, 2^{218500272385180} is an apocalyptic number.

218500272385180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

218500272385180 is an abundant number, since it is smaller than the sum of its proper divisors (240956443079588).

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

218500272385180 is a wasteful number, since it uses less digits than its factorization.

218500272385180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14431987053 (or 14431987051 counting only the distinct ones).

The product of its (nonzero) digits is 2150400, while the sum is 52.

The spelling of 218500272385180 in words is "two hundred eighteen trillion, five hundred billion, two hundred seventy-two million, three hundred eighty-five thousand, one hundred eighty".