11144233665209 has 8 divisors (see below), whose sum is σ = 11799924548040. Its totient is φ = 10488559196416.

The previous prime is 11144233665161. The next prime is 11144233665217. The reversal of 11144233665209 is 90256633244111.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 232627759225 + 10911605905984 = 482315^2 + 3303272^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11144233665209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11144233664209) 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 in 7 ways as a sum of consecutive naturals, for example, 2691794 + ... + 5434539.

It is an arithmetic number, because the mean of its divisors is an integer number (1474990568505).

Almost surely, 2^{11144233665209} is an apocalyptic number.

It is an amenable number.

11144233665209 is a deficient number, since it is larger than the sum of its proper divisors (655690882831).

11144233665209 is an equidigital number, since it uses as much as digits as its factorization.

11144233665209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8207019.

The product of its (nonzero) digits is 933120, while the sum is 47.

The spelling of 11144233665209 in words is "eleven trillion, one hundred forty-four billion, two hundred thirty-three million, six hundred sixty-five thousand, two hundred nine".