168918344144 has 20 divisors (see below), whose sum is σ = 357031955040. Its totient is φ = 76781065440.

The previous prime is 168918344117. The next prime is 168918344167. The reversal of 168918344144 is 441443819861.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 479881484 + ... + 479881835.

It is an arithmetic number, because the mean of its divisors is an integer number (17851597752).

Almost surely, 2^168918344144 is an apocalyptic number.

It is an amenable number.

168918344144 is an abundant number, since it is smaller than the sum of its proper divisors (188113610896).

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

168918344144 is a wasteful number, since it uses less digits than its factorization.

168918344144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 959763338 (or 959763332 counting only the distinct ones).

The product of its digits is 2654208, while the sum is 53.

The spelling of 168918344144 in words is "one hundred sixty-eight billion, nine hundred eighteen million, three hundred forty-four thousand, one hundred forty-four".