557346667321 has 2 divisors, whose sum is σ = 557346667322. Its totient is φ = 557346667320.

The previous prime is 557346667291. The next prime is 557346667333. The reversal of 557346667321 is 123766643755.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 504013383721 + 53333283600 = 709939^2 + 230940^2 .

It is a cyclic number.

It is not a de Polignac number, because 557346667321 - 2⁵ = 557346667289 is a prime.

It is not a weakly prime, because it can be changed into another prime (557346667121) 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, 278673333660 + 278673333661.

It is an arithmetic number, because the mean of its divisors is an integer number (278673333661).

Almost surely, 2^557346667321 is an apocalyptic number.

It is an amenable number.

557346667321 is a deficient number, since it is larger than the sum of its proper divisors (1).

557346667321 is an equidigital number, since it uses as much as digits as its factorization.

557346667321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19051200, while the sum is 55.

The spelling of 557346667321 in words is "five hundred fifty-seven billion, three hundred forty-six million, six hundred sixty-seven thousand, three hundred twenty-one".