169844085009 has 8 divisors (see below), whose sum is σ = 251620866720. Its totient is φ = 113229389988.

The previous prime is 169844084999. The next prime is 169844085029. The reversal of 169844085009 is 900580448961.

169844085009 is a `hidden beast` number, since 1 + 6 + 98 + 4 + 40 + 8 + 500 + 9 = 666.

169844085009 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 169844085009 - 2⁹ = 169844084497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (169844085029) 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 7 ways as a sum of consecutive naturals, for example, 3145260807 + ... + 3145260860.

It is an arithmetic number, because the mean of its divisors is an integer number (31452608340).

Almost surely, 2^169844085009 is an apocalyptic number.

It is an amenable number.

169844085009 is a deficient number, since it is larger than the sum of its proper divisors (81776781711).

169844085009 is an equidigital number, since it uses as much as digits as its factorization.

169844085009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6290521676 (or 6290521670 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 54.

The spelling of 169844085009 in words is "one hundred sixty-nine billion, eight hundred forty-four million, eighty-five thousand, nine".