168040168 has 16 divisors (see below), whose sum is σ = 316277280. Its totient is φ = 83699568.

The previous prime is 168040163. The next prime is 168040193. The reversal of 168040168 is 861040861.

It is a super-2 number, since 2×168040168² = 56474996122936448, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (168040163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37830 + ... + 42037.

It is an arithmetic number, because the mean of its divisors is an integer number (19767330).

Almost surely, 2^168040168 is an apocalyptic number.

It is an amenable number.

168040168 is a deficient number, since it is larger than the sum of its proper divisors (148237112).

168040168 is a wasteful number, since it uses less digits than its factorization.

168040168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80136 (or 80132 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 168040168 is about 12963.0308184467. The cubic root of 168040168 is about 551.8288081474.

The spelling of 168040168 in words is "one hundred sixty-eight million, forty thousand, one hundred sixty-eight".