168388939894092 has 24 divisors (see below), whose sum is σ = 416019733856496. Its totient is φ = 52827902711808.

The previous prime is 168388939894051. The next prime is 168388939894139. The reversal of 168388939894092 is 290498939883861.

It is a happy number.

It is a super-2 number, since 2×168388939894092² (a number of 29 digits) contains 22 as substring.

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, 412717989733 + ... + 412717990140.

It is an arithmetic number, because the mean of its divisors is an integer number (17334155577354).

Almost surely, 2^{168388939894092} is an apocalyptic number.

168388939894092 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

168388939894092 is an abundant number, since it is smaller than the sum of its proper divisors (247630793962404).

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

168388939894092 is a wasteful number, since it uses less digits than its factorization.

168388939894092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 825435979897 (or 825435979895 counting only the distinct ones).

The product of its (nonzero) digits is 11609505792, while the sum is 87.

The spelling of 168388939894092 in words is "one hundred sixty-eight trillion, three hundred eighty-eight billion, nine hundred thirty-nine million, eight hundred ninety-four thousand, ninety-two".