168494395392 has 312 divisors, whose sum is σ = 503758295040. Its totient is φ = 54229893120.

The previous prime is 168494395291. The next prime is 168494395403. The reversal of 168494395392 is 293593494861.

168494395392 is a `hidden beast` number, since 1 + 6 + 8 + 4 + 94 + 3 + 9 + 539 + 2 = 666.

It is a super-2 number, since 2×168494395392² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 136875417 + ... + 136876647.

It is an arithmetic number, because the mean of its divisors is an integer number (1614609920).

Almost surely, 2^168494395392 is an apocalyptic number.

168494395392 is a gapful number since it is divisible by the number (12) 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 168494395392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (251879147520).

168494395392 is an abundant number, since it is smaller than the sum of its proper divisors (335263899648).

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

168494395392 is a wasteful number, since it uses less digits than its factorization.

168494395392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1387 (or 1362 counting only the distinct ones).

The product of its digits is 50388480, while the sum is 63.

The spelling of 168494395392 in words is "one hundred sixty-eight billion, four hundred ninety-four million, three hundred ninety-five thousand, three hundred ninety-two".