168855919169 has 16 divisors (see below), whose sum is σ = 201552323328. Its totient is φ = 138314533632.

The previous prime is 168855919153. The next prime is 168855919171. The reversal of 168855919169 is 961919558861.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 168855919169 - 2⁴ = 168855919153 is a prime.

It is a super-2 number, since 2×168855919169² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 168855919099 and 168855919108.

It is not an unprimeable number, because it can be changed into a prime (168855919189) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 301412 + ... + 654645.

It is an arithmetic number, because the mean of its divisors is an integer number (12597020208).

Almost surely, 2^168855919169 is an apocalyptic number.

It is an amenable number.

168855919169 is a deficient number, since it is larger than the sum of its proper divisors (32696404159).

168855919169 is a wasteful number, since it uses less digits than its factorization.

168855919169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 957184.

The product of its digits is 41990400, while the sum is 68.

The spelling of 168855919169 in words is "one hundred sixty-eight billion, eight hundred fifty-five million, nine hundred nineteen thousand, one hundred sixty-nine".