168394827042 has 80 divisors (see below), whose sum is σ = 407527287552. Its totient is φ = 51664249440.

The previous prime is 168394826987. The next prime is 168394827043. The reversal of 168394827042 is 240728493861.

168394827042 is a `hidden beast` number, since 1 + 68 + 39 + 482 + 70 + 4 + 2 = 666.

168394827042 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 168394827042.

It is not an unprimeable number, because it can be changed into a prime (168394827043) 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 39 ways as a sum of consecutive naturals, for example, 615567 + ... + 845997.

Almost surely, 2^168394827042 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 168394827042, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (203763643776).

168394827042 is an abundant number, since it is smaller than the sum of its proper divisors (239132460510).

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

168394827042 is a wasteful number, since it uses less digits than its factorization.

168394827042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230805 (or 230796 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 54.

The spelling of 168394827042 in words is "one hundred sixty-eight billion, three hundred ninety-four million, eight hundred twenty-seven thousand, forty-two".