99999000811 has 2 divisors, whose sum is σ = 99999000812. Its totient is φ = 99999000810.

The previous prime is 99999000799. The next prime is 99999000869. The reversal of 99999000811 is 11800099999.

It is a weak prime.

It is an emirp because it is prime and its reverse (11800099999) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99999000811 - 2¹³ = 99998992619 is a prime.

It is not a weakly prime, because it can be changed into another prime (99999009811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49999500405 + 49999500406.

It is an arithmetic number, because the mean of its divisors is an integer number (49999500406).

Almost surely, 2^99999000811 is an apocalyptic number.

99999000811 is a deficient number, since it is larger than the sum of its proper divisors (1).

99999000811 is an equidigital number, since it uses as much as digits as its factorization.

99999000811 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 472392, while the sum is 55.

The spelling of 99999000811 in words is "ninety-nine billion, nine hundred ninety-nine million, eight hundred eleven", and thus it is an aban number.