168179853940 has 96 divisors (see below), whose sum is σ = 425072793600. Its totient is φ = 54601464960.

The previous prime is 168179853871. The next prime is 168179853991. The reversal of 168179853940 is 49358971861.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6208225 + ... + 6235255.

It is an arithmetic number, because the mean of its divisors is an integer number (4427841600).

Almost surely, 2^168179853940 is an apocalyptic number.

168179853940 is a gapful number since it is divisible by the number (10) 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 168179853940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (212536396800).

168179853940 is an abundant number, since it is smaller than the sum of its proper divisors (256892939660).

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

168179853940 is a wasteful number, since it uses less digits than its factorization.

168179853940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29405 (or 29403 counting only the distinct ones).

The product of its (nonzero) digits is 13063680, while the sum is 61.

The spelling of 168179853940 in words is "one hundred sixty-eight billion, one hundred seventy-nine million, eight hundred fifty-three thousand, nine hundred forty".