1164663306509 has 2 divisors, whose sum is σ = 1164663306510. Its totient is φ = 1164663306508.

The previous prime is 1164663306503. The next prime is 1164663306589. The reversal of 1164663306509 is 9056033664611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1043574618025 + 121088688484 = 1021555^2 + 347978^2 .

It is a cyclic number.

It is not a de Polignac number, because 1164663306509 - 2²⁸ = 1164394871053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1164663306503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 582331653254 + 582331653255.

It is an arithmetic number, because the mean of its divisors is an integer number (582331653255).

Almost surely, 2^{1164663306509} is an apocalyptic number.

It is an amenable number.

1164663306509 is a deficient number, since it is larger than the sum of its proper divisors (1).

1164663306509 is an equidigital number, since it uses as much as digits as its factorization.

1164663306509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2099520, while the sum is 50.

The spelling of 1164663306509 in words is "one trillion, one hundred sixty-four billion, six hundred sixty-three million, three hundred six thousand, five hundred nine".