16685333666867 has 8 divisors (see below), whose sum is σ = 16712949491760. Its totient is φ = 16657719973920.

The previous prime is 16685333666821. The next prime is 16685333666899. The reversal of 16685333666867 is 76866633358661.

It is a happy number.

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 16685333666867 - 2¹⁴ = 16685333650483 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16685333666794 and 16685333666803.

It is not an unprimeable number, because it can be changed into a prime (16685333666467) 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, 15532817 + ... + 16572237.

It is an arithmetic number, because the mean of its divisors is an integer number (2089118686470).

Almost surely, 2^{16685333666867} is an apocalyptic number.

16685333666867 is a deficient number, since it is larger than the sum of its proper divisors (27615824893).

16685333666867 is a wasteful number, since it uses less digits than its factorization.

16685333666867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1065973.

The product of its digits is 2821754880, while the sum is 74.

The spelling of 16685333666867 in words is "sixteen trillion, six hundred eighty-five billion, three hundred thirty-three million, six hundred sixty-six thousand, eight hundred sixty-seven".