168340822128 has 160 divisors (see below), whose sum is σ = 493261881600. Its totient is φ = 54954941184.

The previous prime is 168340822103. The next prime is 168340822129. The reversal of 168340822128 is 821228043861.

168340822128 is a `hidden beast` number, since 1 + 68 + 340 + 8 + 221 + 28 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168340822129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4990503 + ... + 5024121.

It is an arithmetic number, because the mean of its divisors is an integer number (3082886760).

Almost surely, 2^168340822128 is an apocalyptic number.

168340822128 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 168340822128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (246630940800).

168340822128 is an abundant number, since it is smaller than the sum of its proper divisors (324921059472).

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

168340822128 is a wasteful number, since it uses less digits than its factorization.

168340822128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33876 (or 33864 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 45.

Adding to 168340822128 its reverse (821228043861), we get a palindrome (989568865989).

The spelling of 168340822128 in words is "one hundred sixty-eight billion, three hundred forty million, eight hundred twenty-two thousand, one hundred twenty-eight".