11533327221809 has 2 divisors, whose sum is σ = 11533327221810. Its totient is φ = 11533327221808.

The previous prime is 11533327221751. The next prime is 11533327221811. The reversal of 11533327221809 is 90812272333511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6945043269025 + 4588283952784 = 2635345^2 + 2142028^2 .

It is a cyclic number.

It is not a de Polignac number, because 11533327221809 - 2²⁰ = 11533326173233 is a prime.

Together with 11533327221811, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11533327220809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5766663610904 + 5766663610905.

It is an arithmetic number, because the mean of its divisors is an integer number (5766663610905).

Almost surely, 2^{11533327221809} is an apocalyptic number.

It is an amenable number.

11533327221809 is a deficient number, since it is larger than the sum of its proper divisors (1).

11533327221809 is an equidigital number, since it uses as much as digits as its factorization.

11533327221809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 544320, while the sum is 47.

The spelling of 11533327221809 in words is "eleven trillion, five hundred thirty-three billion, three hundred twenty-seven million, two hundred twenty-one thousand, eight hundred nine".