168857538160 has 80 divisors (see below), whose sum is σ = 405526044672. Its totient is φ = 65320992000.

The previous prime is 168857538151. The next prime is 168857538167. The reversal of 168857538160 is 61835758861.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 168857538095 and 168857538104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168857538167) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 3864435 + ... + 3907885.

Almost surely, 2^168857538160 is an apocalyptic number.

168857538160 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 168857538160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (202763022336).

168857538160 is an abundant number, since it is smaller than the sum of its proper divisors (236668506512).

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

168857538160 is a wasteful number, since it uses less digits than its factorization.

168857538160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45062 (or 45056 counting only the distinct ones).

The product of its (nonzero) digits is 9676800, while the sum is 58.

The spelling of 168857538160 in words is "one hundred sixty-eight billion, eight hundred fifty-seven million, five hundred thirty-eight thousand, one hundred sixty".