9056664666509 has 2 divisors, whose sum is σ = 9056664666510. Its totient is φ = 9056664666508.

The previous prime is 9056664666481. The next prime is 9056664666527.

9056664666509 is nontrivially palindromic in base 10.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4904993537284 + 4151671129225 = 2214722^2 + 2037565^2 .

It is a palprime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9056664666509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9056664666209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4528332333254 + 4528332333255.

It is an arithmetic number, because the mean of its divisors is an integer number (4528332333255).

Almost surely, 2^{9056664666509} is an apocalyptic number.

It is an amenable number.

9056664666509 is a deficient number, since it is larger than the sum of its proper divisors (1).

9056664666509 is an equidigital number, since it uses as much as digits as its factorization.

9056664666509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 377913600, while the sum is 68.

The spelling of 9056664666509 in words is "nine trillion, fifty-six billion, six hundred sixty-four million, six hundred sixty-six thousand, five hundred nine".