16685353668367 has 2 divisors, whose sum is σ = 16685353668368. Its totient is φ = 16685353668366.

The previous prime is 16685353668349. The next prime is 16685353668377. The reversal of 16685353668367 is 76386635358661.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16685353668367 is a prime.

It is a super-3 number, since 3×16685353668367³ (a number of 41 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 16685353668367.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16685353668377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8342676834183 + 8342676834184.

It is an arithmetic number, because the mean of its divisors is an integer number (8342676834184).

Almost surely, 2^{16685353668367} is an apocalyptic number.

16685353668367 is a deficient number, since it is larger than the sum of its proper divisors (1).

16685353668367 is an equidigital number, since it uses as much as digits as its factorization.

16685353668367 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2351462400, while the sum is 73.

The spelling of 16685353668367 in words is "sixteen trillion, six hundred eighty-five billion, three hundred fifty-three million, six hundred sixty-eight thousand, three hundred sixty-seven".