168857156568 has 32 divisors (see below), whose sum is σ = 425365364160. Its totient is φ = 55856055840.

The previous prime is 168857156551. The next prime is 168857156591. The reversal of 168857156568 is 865651758861.

It is a junction number, because it is equal to n+sod(n) for n = 168857156499 and 168857156508.

It is a congruent 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, 26850730 + ... + 26857017.

It is an arithmetic number, because the mean of its divisors is an integer number (13292667630).

Almost surely, 2^168857156568 is an apocalyptic number.

It is an amenable number.

168857156568 is an abundant number, since it is smaller than the sum of its proper divisors (256508207592).

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

168857156568 is a wasteful number, since it uses less digits than its factorization.

168857156568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53707887 (or 53707883 counting only the distinct ones).

The product of its digits is 96768000, while the sum is 66.

The spelling of 168857156568 in words is "one hundred sixty-eight billion, eight hundred fifty-seven million, one hundred fifty-six thousand, five hundred sixty-eight".