168449428359180 has 288 divisors, whose sum is σ = 518666782286016. Its totient is φ = 44247109828608.

The previous prime is 168449428359151. The next prime is 168449428359193. The reversal of 168449428359180 is 81953824944861.

It is a happy number.

168449428359180 is a `hidden beast` number, since 1 + 6 + 8 + 4 + 4 + 9 + 4 + 28 + 3 + 591 + 8 + 0 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 168449428359099 and 168449428359108.

It is an unprimeable number.

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 95 ways as a sum of consecutive naturals, for example, 21549110632 + ... + 21549118448.

It is an arithmetic number, because the mean of its divisors is an integer number (1800926327382).

Almost surely, 2^{168449428359180} is an apocalyptic number.

168449428359180 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 168449428359180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (259333391143008).

168449428359180 is an abundant number, since it is smaller than the sum of its proper divisors (350217353926836).

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

168449428359180 is a wasteful number, since it uses less digits than its factorization.

168449428359180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13593 (or 13588 counting only the distinct ones).

The product of its (nonzero) digits is 477757440, while the sum is 72.

The spelling of 168449428359180 in words is "one hundred sixty-eight trillion, four hundred forty-nine billion, four hundred twenty-eight million, three hundred fifty-nine thousand, one hundred eighty".