168908001608 has 16 divisors (see below), whose sum is σ = 318719718780. Its totient is φ = 83916076608.

The previous prime is 168908001607. The next prime is 168908001629. The reversal of 168908001608 is 806100809861.

It can be written as a sum of positive squares in 2 ways, for example, as 161573449444 + 7334552164 = 401962^2 + 85642^2 .

It is not an unprimeable number, because it can be changed into a prime (168908001607) 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, 67239191 + ... + 67241702.

Almost surely, 2^168908001608 is an apocalyptic number.

It is an amenable number.

168908001608 is a deficient number, since it is larger than the sum of its proper divisors (149811717172).

168908001608 is a wasteful number, since it uses less digits than its factorization.

168908001608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134481056 (or 134481052 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 47.

The spelling of 168908001608 in words is "one hundred sixty-eight billion, nine hundred eight million, one thousand, six hundred eight".