10000000999 has 2 divisors, whose sum is σ = 10000001000. Its totient is φ = 10000000998.

The previous prime is 10000000993. The next prime is 10000001041. The reversal of 10000000999 is 99900000001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10000000999 - 2³ = 10000000991 is a prime.

10000000999 is a modest number, since divided by 999 gives 10 as remainder.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10000000991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5000000499 + 5000000500.

It is an arithmetic number, because the mean of its divisors is an integer number (5000000500).

Almost surely, 2^10000000999 is an apocalyptic number.

10000000999 is a deficient number, since it is larger than the sum of its proper divisors (1).

10000000999 is an equidigital number, since it uses as much as digits as its factorization.

10000000999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 729, while the sum is 28.

The spelling of 10000000999 in words is "ten billion, nine hundred ninety-nine", and thus it is an aban number.