168668666697 has 8 divisors (see below), whose sum is σ = 224906957856. Its totient is φ = 112438076672.

The previous prime is 168668666689. The next prime is 168668666707. The reversal of 168668666697 is 796666866861.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 168668666697 - 2³ = 168668666689 is a prime.

It is not an unprimeable number, because it can be changed into a prime (168668666197) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1873983 + ... + 1961924.

It is an arithmetic number, because the mean of its divisors is an integer number (28113369732).

Almost surely, 2^168668666697 is an apocalyptic number.

It is an amenable number.

168668666697 is a deficient number, since it is larger than the sum of its proper divisors (56238291159).

168668666697 is a wasteful number, since it uses less digits than its factorization.

168668666697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3850567.

The product of its digits is 1128701952, while the sum is 75.

The spelling of 168668666697 in words is "one hundred sixty-eight billion, six hundred sixty-eight million, six hundred sixty-six thousand, six hundred ninety-seven".