168906855936 has 640 divisors, whose sum is σ = 605577240576. Its totient is φ = 40556298240.

The previous prime is 168906855907. The next prime is 168906855961. The reversal of 168906855936 is 639558609861.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 73660806 + ... + 73663098.

Almost surely, 2^168906855936 is an apocalyptic number.

168906855936 is a gapful number since it is divisible by the number (16) 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 168906855936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (302788620288).

168906855936 is an abundant number, since it is smaller than the sum of its proper divisors (436670384640).

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

168906855936 is a wasteful number, since it uses less digits than its factorization.

168906855936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2382 (or 2366 counting only the distinct ones).

The product of its (nonzero) digits is 83980800, while the sum is 66.

The spelling of 168906855936 in words is "one hundred sixty-eight billion, nine hundred six million, eight hundred fifty-five thousand, nine hundred thirty-six".