218068678338 has 32 divisors (see below), whose sum is σ = 527762853504. Its totient is φ = 58640316672.

The previous prime is 218068678327. The next prime is 218068678357. The reversal of 218068678338 is 833876860812.

It is a super-2 number, since 2×218068678338² (a number of 23 digits) contains 22 as substring.

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, 152708445 + ... + 152709872.

It is an arithmetic number, because the mean of its divisors is an integer number (16492589172).

Almost surely, 2^218068678338 is an apocalyptic number.

218068678338 is an abundant number, since it is smaller than the sum of its proper divisors (309694175166).

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

218068678338 is a wasteful number, since it uses less digits than its factorization.

218068678338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305418346.

The product of its (nonzero) digits is 18579456, while the sum is 60.

The spelling of 218068678338 in words is "two hundred eighteen billion, sixty-eight million, six hundred seventy-eight thousand, three hundred thirty-eight".