16668686685367 has 8 divisors (see below), whose sum is σ = 16795950268032. Its totient is φ = 16541895324600.

The previous prime is 16668686685359. The next prime is 16668686685373. The reversal of 16668686685367 is 76358668686661.

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 16668686685367 - 2³ = 16668686685359 is a prime.

It is a super-2 number, since 2×16668686685367² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16668686685307) 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, 117984609 + ... + 118125802.

It is an arithmetic number, because the mean of its divisors is an integer number (2099493783504).

Almost surely, 2^{16668686685367} is an apocalyptic number.

16668686685367 is a deficient number, since it is larger than the sum of its proper divisors (127263582665).

16668686685367 is a wasteful number, since it uses less digits than its factorization.

16668686685367 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236110949.

The product of its digits is 15049359360, while the sum is 82.

The spelling of 16668686685367 in words is "sixteen trillion, six hundred sixty-eight billion, six hundred eighty-six million, six hundred eighty-five thousand, three hundred sixty-seven".