204099559799 has 2 divisors, whose sum is σ = 204099559800. Its totient is φ = 204099559798.

The previous prime is 204099559789. The next prime is 204099559801. The reversal of 204099559799 is 997955990402.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-204099559799 is a prime.

It is a Sophie Germain prime.

Together with 204099559801, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204099559739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102049779899 + 102049779900.

It is an arithmetic number, because the mean of its divisors is an integer number (102049779900).

Almost surely, 2^204099559799 is an apocalyptic number.

204099559799 is a deficient number, since it is larger than the sum of its proper divisors (1).

204099559799 is an equidigital number, since it uses as much as digits as its factorization.

204099559799 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 82668600, while the sum is 68.

The spelling of 204099559799 in words is "two hundred four billion, ninety-nine million, five hundred fifty-nine thousand, seven hundred ninety-nine".