218334221984 has 24 divisors (see below), whose sum is σ = 434018763360. Its totient is φ = 108107234496.

The previous prime is 218334221983. The next prime is 218334222023. The reversal of 218334221984 is 489122433812.

It is not an unprimeable number, because it can be changed into a prime (218334221983) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33117794 + ... + 33124385.

It is an arithmetic number, because the mean of its divisors is an integer number (18084115140).

Almost surely, 2^218334221984 is an apocalyptic number.

It is an amenable number.

218334221984 is a deficient number, since it is larger than the sum of its proper divisors (215684541376).

218334221984 is a wasteful number, since it uses less digits than its factorization.

218334221984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66242292 (or 66242284 counting only the distinct ones).

The product of its digits is 663552, while the sum is 47.

The spelling of 218334221984 in words is "two hundred eighteen billion, three hundred thirty-four million, two hundred twenty-one thousand, nine hundred eighty-four".