999999000811 has 2 divisors, whose sum is σ = 999999000812. Its totient is φ = 999999000810.

The previous prime is 999999000779. The next prime is 999999000817. The reversal of 999999000811 is 118000999999.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 999999000811 - 2⁵ = 999999000779 is a prime.

It is not a weakly prime, because it can be changed into another prime (999999000817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499999500405 + 499999500406.

It is an arithmetic number, because the mean of its divisors is an integer number (499999500406).

Almost surely, 2^999999000811 is an apocalyptic number.

999999000811 is a deficient number, since it is larger than the sum of its proper divisors (1).

999999000811 is an equidigital number, since it uses as much as digits as its factorization.

999999000811 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4251528, while the sum is 64.

The spelling of 999999000811 in words is "nine hundred ninety-nine billion, nine hundred ninety-nine million, eight hundred eleven", and thus it is an aban number.