11000000999 has 32 divisors (see below), whose sum is σ = 13034918400. Its totient is φ = 9184855680.

The previous prime is 11000000983. The next prime is 11000001007. The reversal of 11000000999 is 99900000011.

It is not a de Polignac number, because 11000000999 - 2⁴ = 11000000983 is a prime.

It is a Duffinian number.

11000000999 is a modest number, since divided by 999 gives 11 as remainder.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11000000969) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4026464 + ... + 4029194.

It is an arithmetic number, because the mean of its divisors is an integer number (407341200).

Almost surely, 2^11000000999 is an apocalyptic number.

11000000999 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

11000000999 is a deficient number, since it is larger than the sum of its proper divisors (2034917401).

11000000999 is a wasteful number, since it uses less digits than its factorization.

11000000999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3495.

The product of its (nonzero) digits is 729, while the sum is 29.

The spelling of 11000000999 in words is "eleven billion, nine hundred ninety-nine", and thus it is an aban number.