168351685163 has 4 divisors (see below), whose sum is σ = 168795885240. Its totient is φ = 167907485088.

The previous prime is 168351685147. The next prime is 168351685169. The reversal of 168351685163 is 361586153861.

168351685163 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 168351685163 - 2⁴ = 168351685147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (168351685169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 222099470 + ... + 222100227.

It is an arithmetic number, because the mean of its divisors is an integer number (42198971310).

Almost surely, 2^168351685163 is an apocalyptic number.

168351685163 is a deficient number, since it is larger than the sum of its proper divisors (444200077).

168351685163 is an equidigital number, since it uses as much as digits as its factorization.

168351685163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444200076.

The product of its digits is 3110400, while the sum is 53.

The spelling of 168351685163 in words is "one hundred sixty-eight billion, three hundred fifty-one million, six hundred eighty-five thousand, one hundred sixty-three".