168590443968 has 168 divisors, whose sum is σ = 503414598960. Its totient is φ = 53896458240.

The previous prime is 168590443951. The next prime is 168590443979. The reversal of 168590443968 is 869344095861.

168590443968 is a `hidden beast` number, since 1 + 6 + 8 + 590 + 4 + 4 + 39 + 6 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1332846 + ... + 1453842.

It is an arithmetic number, because the mean of its divisors is an integer number (2996515470).

Almost surely, 2^168590443968 is an apocalyptic number.

168590443968 is a gapful number since it is divisible by the number (18) 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 168590443968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (251707299480).

168590443968 is an abundant number, since it is smaller than the sum of its proper divisors (334824154992).

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

168590443968 is a wasteful number, since it uses less digits than its factorization.

168590443968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121115 (or 121102 counting only the distinct ones).

The product of its (nonzero) digits is 44789760, while the sum is 63.

The spelling of 168590443968 in words is "one hundred sixty-eight billion, five hundred ninety million, four hundred forty-three thousand, nine hundred sixty-eight".