16685814833 has 2 divisors, whose sum is σ = 16685814834. Its totient is φ = 16685814832.

The previous prime is 16685814797. The next prime is 16685814907. The reversal of 16685814833 is 33841858661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13631263009 + 3054551824 = 116753^2 + 55268^2 .

It is a cyclic number.

It is not a de Polignac number, because 16685814833 - 2¹² = 16685810737 is a prime.

It is not a weakly prime, because it can be changed into another prime (16685814133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8342907416 + 8342907417.

It is an arithmetic number, because the mean of its divisors is an integer number (8342907417).

Almost surely, 2^16685814833 is an apocalyptic number.

It is an amenable number.

16685814833 is a deficient number, since it is larger than the sum of its proper divisors (1).

16685814833 is an equidigital number, since it uses as much as digits as its factorization.

16685814833 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3317760, while the sum is 53.

The spelling of 16685814833 in words is "sixteen billion, six hundred eighty-five million, eight hundred fourteen thousand, eight hundred thirty-three".