204806505833 has 2 divisors, whose sum is σ = 204806505834. Its totient is φ = 204806505832.

The previous prime is 204806505811. The next prime is 204806505899. The reversal of 204806505833 is 338505608402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 199347069289 + 5459436544 = 446483^2 + 73888^2 .

It is a cyclic number.

It is not a de Polignac number, because 204806505833 - 2²⁸ = 204538070377 is a prime.

It is not a weakly prime, because it can be changed into another prime (204806505803) 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, 102403252916 + 102403252917.

It is an arithmetic number, because the mean of its divisors is an integer number (102403252917).

Almost surely, 2^204806505833 is an apocalyptic number.

It is an amenable number.

204806505833 is a deficient number, since it is larger than the sum of its proper divisors (1).

204806505833 is an equidigital number, since it uses as much as digits as its factorization.

204806505833 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 691200, while the sum is 44.

The spelling of 204806505833 in words is "two hundred four billion, eight hundred six million, five hundred five thousand, eight hundred thirty-three".