669014054309 has 2 divisors, whose sum is σ = 669014054310. Its totient is φ = 669014054308.

The previous prime is 669014054287. The next prime is 669014054327. The reversal of 669014054309 is 903450410966.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 458121861409 + 210892192900 = 676847^2 + 459230^2 .

It is a cyclic number.

It is not a de Polignac number, because 669014054309 - 2³⁶ = 600294577573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (669014054339) 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 as a sum of consecutive naturals, namely, 334507027154 + 334507027155.

It is an arithmetic number, because the mean of its divisors is an integer number (334507027155).

Almost surely, 2^669014054309 is an apocalyptic number.

It is an amenable number.

669014054309 is a deficient number, since it is larger than the sum of its proper divisors (1).

669014054309 is an equidigital number, since it uses as much as digits as its factorization.

669014054309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 699840, while the sum is 47.

The spelling of 669014054309 in words is "six hundred sixty-nine billion, fourteen million, fifty-four thousand, three hundred nine".