6668851672017 has 16 divisors (see below), whose sum is σ = 9879971671680. Its totient is φ = 4445814977136.

The previous prime is 6668851672003. The next prime is 6668851672033. The reversal of 6668851672017 is 7102761588666.

It is not a de Polignac number, because 6668851672017 - 2⁴ = 6668851672001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6668851672057) 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, 957678 + ... + 3775559.

It is an arithmetic number, because the mean of its divisors is an integer number (617498229480).

Almost surely, 2^{6668851672017} is an apocalyptic number.

It is an amenable number.

6668851672017 is a deficient number, since it is larger than the sum of its proper divisors (3211119999663).

6668851672017 is a wasteful number, since it uses less digits than its factorization.

6668851672017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4785429 (or 4785423 counting only the distinct ones).

The product of its (nonzero) digits is 40642560, while the sum is 63.

The spelling of 6668851672017 in words is "six trillion, six hundred sixty-eight billion, eight hundred fifty-one million, six hundred seventy-two thousand, seventeen".