11643175009 has 2 divisors, whose sum is σ = 11643175010. Its totient is φ = 11643175008.

The previous prime is 11643175007. The next prime is 11643175079. The reversal of 11643175009 is 90057134611.

It is a happy number.

11643175009 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11480051025 + 163123984 = 107145^2 + 12772^2 .

It is a cyclic number.

It is not a de Polignac number, because 11643175009 - 2¹ = 11643175007 is a prime.

Together with 11643175007, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (11643175007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5821587504 + 5821587505.

It is an arithmetic number, because the mean of its divisors is an integer number (5821587505).

Almost surely, 2^11643175009 is an apocalyptic number.

It is an amenable number.

11643175009 is a deficient number, since it is larger than the sum of its proper divisors (1).

11643175009 is an equidigital number, since it uses as much as digits as its factorization.

11643175009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22680, while the sum is 37.

The spelling of 11643175009 in words is "eleven billion, six hundred forty-three million, one hundred seventy-five thousand, nine".