218314344228 has 24 divisors (see below), whose sum is σ = 514073535360. Its totient is φ = 72103819680.

The previous prime is 218314344203. The next prime is 218314344371. The reversal of 218314344228 is 822443413812.

It is a happy number.

It is a super-2 number, since 2×218314344228² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 218314344228.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83452188 + ... + 83454803.

It is an arithmetic number, because the mean of its divisors is an integer number (21419730640).

Almost surely, 2^218314344228 is an apocalyptic number.

It is an amenable number.

218314344228 is an abundant number, since it is smaller than the sum of its proper divisors (295759191132).

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

218314344228 is a wasteful number, since it uses less digits than its factorization.

218314344228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166907107 (or 166907105 counting only the distinct ones).

The product of its digits is 294912, while the sum is 42.

The spelling of 218314344228 in words is "two hundred eighteen billion, three hundred fourteen million, three hundred forty-four thousand, two hundred twenty-eight".