591666966949 has 2 divisors, whose sum is σ = 591666966950. Its totient is φ = 591666966948.

The previous prime is 591666966923. The next prime is 591666966967. The reversal of 591666966949 is 949669666195.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 402137344449 + 189529622500 = 634143^2 + 435350^2 .

It is a cyclic number.

It is not a de Polignac number, because 591666966949 - 2⁹ = 591666966437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (591666967949) 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, 295833483474 + 295833483475.

It is an arithmetic number, because the mean of its divisors is an integer number (295833483475).

Almost surely, 2^591666966949 is an apocalyptic number.

It is an amenable number.

591666966949 is a deficient number, since it is larger than the sum of its proper divisors (1).

591666966949 is an equidigital number, since it uses as much as digits as its factorization.

591666966949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1020366720, while the sum is 76.

The spelling of 591666966949 in words is "five hundred ninety-one billion, six hundred sixty-six million, nine hundred sixty-six thousand, nine hundred forty-nine".