168666868701 has 20 divisors (see below), whose sum is σ = 253278330624. Its totient is φ = 111855853800.

The previous prime is 168666868681. The next prime is 168666868751. The reversal of 168666868701 is 107868666861.

It is not a de Polignac number, because 168666868701 - 2⁶ = 168666868637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168666868751) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 5435595 + ... + 5466536.

Almost surely, 2^168666868701 is an apocalyptic number.

It is an amenable number.

168666868701 is a deficient number, since it is larger than the sum of its proper divisors (84611461923).

168666868701 is a wasteful number, since it uses less digits than its factorization.

168666868701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10902334 (or 10902325 counting only the distinct ones).

The product of its (nonzero) digits is 27869184, while the sum is 63.

The spelling of 168666868701 in words is "one hundred sixty-eight billion, six hundred sixty-six million, eight hundred sixty-eight thousand, seven hundred one".