168168378316806 has 40 divisors (see below), whose sum is σ = 430653413258640. Its totient is φ = 48048108090192.

The previous prime is 168168378316801. The next prime is 168168378316823. The reversal of 168168378316806 is 608613873861861.

168168378316806 is a `hidden beast` number, since 1 + 6 + 8 + 168 + 3 + 78 + 316 + 80 + 6 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168168378316801) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 74148313821 + ... + 74148316088.

It is an arithmetic number, because the mean of its divisors is an integer number (10766335331466).

Almost surely, 2^{168168378316806} is an apocalyptic number.

168168378316806 is an abundant number, since it is smaller than the sum of its proper divisors (262485034941834).

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

168168378316806 is a wasteful number, since it uses less digits than its factorization.

168168378316806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148296629930 (or 148296629921 counting only the distinct ones).

The product of its (nonzero) digits is 334430208, while the sum is 72.

The spelling of 168168378316806 in words is "one hundred sixty-eight trillion, one hundred sixty-eight billion, three hundred seventy-eight million, three hundred sixteen thousand, eight hundred six".