9999810011 has 2 divisors, whose sum is σ = 9999810012. Its totient is φ = 9999810010.

The previous prime is 9999809999. The next prime is 9999810047. The reversal of 9999810011 is 1100189999.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9999810011 - 2²⁶ = 9932701147 is a prime.

It is not a weakly prime, because it can be changed into another prime (9999810061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4999905005 + 4999905006.

It is an arithmetic number, because the mean of its divisors is an integer number (4999905006).

Almost surely, 2^9999810011 is an apocalyptic number.

9999810011 is a deficient number, since it is larger than the sum of its proper divisors (1).

9999810011 is an equidigital number, since it uses as much as digits as its factorization.

9999810011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 52488, while the sum is 47.

The square root of 9999810011 is about 99999.0500504880. The cubic root of 9999810011 is about 2154.4210459824.

The spelling of 9999810011 in words is "nine billion, nine hundred ninety-nine million, eight hundred ten thousand, eleven".