168857367393 has 24 divisors (see below), whose sum is σ = 266507672704. Its totient is φ = 94465657440.

The previous prime is 168857367383. The next prime is 168857367439. The reversal of 168857367393 is 393763758861.

It is not a de Polignac number, because 168857367393 - 2¹⁴ = 168857351009 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (168857367353) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17886505 + ... + 17895942.

Almost surely, 2^168857367393 is an apocalyptic number.

168857367393 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

168857367393 is a deficient number, since it is larger than the sum of its proper divisors (97650305311).

168857367393 is a wasteful number, since it uses less digits than its factorization.

168857367393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35782485 (or 35782474 counting only the distinct ones).

The product of its digits is 137168640, while the sum is 66.

The spelling of 168857367393 in words is "one hundred sixty-eight billion, eight hundred fifty-seven million, three hundred sixty-seven thousand, three hundred ninety-three".