168806636160 has 256 divisors, whose sum is σ = 557460126720. Its totient is φ = 43403673600.

The previous prime is 168806636111. The next prime is 168806636183. The reversal of 168806636160 is 61636608861.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16720074 + ... + 16730166.

It is an arithmetic number, because the mean of its divisors is an integer number (2177578620).

Almost surely, 2^168806636160 is an apocalyptic number.

168806636160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 168806636160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (278730063360).

168806636160 is an abundant number, since it is smaller than the sum of its proper divisors (388653490560).

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

168806636160 is a wasteful number, since it uses less digits than its factorization.

168806636160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10427 (or 10415 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 51.

The spelling of 168806636160 in words is "one hundred sixty-eight billion, eight hundred six million, six hundred thirty-six thousand, one hundred sixty".