168520678338 has 16 divisors (see below), whose sum is σ = 337062930336. Its totient is φ = 56169963840.

The previous prime is 168520678301. The next prime is 168520678421. The reversal of 168520678338 is 833876025861.

It is a Curzon number.

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, 796456 + ... + 985587.

It is an arithmetic number, because the mean of its divisors is an integer number (21066433146).

Almost surely, 2^168520678338 is an apocalyptic number.

168520678338 is an abundant number, since it is smaller than the sum of its proper divisors (168542251998).

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

168520678338 is a wasteful number, since it uses less digits than its factorization.

168520678338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1797809.

The product of its (nonzero) digits is 11612160, while the sum is 57.

The spelling of 168520678338 in words is "one hundred sixty-eight billion, five hundred twenty million, six hundred seventy-eight thousand, three hundred thirty-eight".