16808634833 has 2 divisors, whose sum is σ = 16808634834. Its totient is φ = 16808634832.

The previous prime is 16808634793. The next prime is 16808634839. The reversal of 16808634833 is 33843680861.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16802122129 + 6512704 = 129623^2 + 2552^2 .

It is an emirp because it is prime and its reverse (33843680861) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16808634833 - 2¹⁸ = 16808372689 is a prime.

It is not a weakly prime, because it can be changed into another prime (16808634839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8404317416 + 8404317417.

It is an arithmetic number, because the mean of its divisors is an integer number (8404317417).

Almost surely, 2^16808634833 is an apocalyptic number.

It is an amenable number.

16808634833 is a deficient number, since it is larger than the sum of its proper divisors (1).

16808634833 is an equidigital number, since it uses as much as digits as its factorization.

16808634833 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1990656, while the sum is 50.

The spelling of 16808634833 in words is "sixteen billion, eight hundred eight million, six hundred thirty-four thousand, eight hundred thirty-three".