11011000909 has 2 divisors, whose sum is σ = 11011000910. Its totient is φ = 11011000908.

The previous prime is 11011000907. The next prime is 11011000919. The reversal of 11011000909 is 90900011011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10649620809 + 361380100 = 103197^2 + 19010^2 .

It is a cyclic number.

It is not a de Polignac number, because 11011000909 - 2¹ = 11011000907 is a prime.

Together with 11011000907, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 11011000909.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11011000901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5505500454 + 5505500455.

It is an arithmetic number, because the mean of its divisors is an integer number (5505500455).

Almost surely, 2^11011000909 is an apocalyptic number.

It is an amenable number.

11011000909 is a deficient number, since it is larger than the sum of its proper divisors (1).

11011000909 is an equidigital number, since it uses as much as digits as its factorization.

11011000909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81, while the sum is 22.

The spelling of 11011000909 in words is "eleven billion, eleven million, nine hundred nine", and thus it is an aban number.