320657568097 has 2 divisors, whose sum is σ = 320657568098. Its totient is φ = 320657568096.

The previous prime is 320657568067. The next prime is 320657568139. The reversal of 320657568097 is 790865756023.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 229286787921 + 91370780176 = 478839^2 + 302276^2 .

It is a cyclic number.

It is not a de Polignac number, because 320657568097 - 2¹¹ = 320657566049 is a prime.

It is not a weakly prime, because it can be changed into another prime (320657568067) 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, 160328784048 + 160328784049.

It is an arithmetic number, because the mean of its divisors is an integer number (160328784049).

Almost surely, 2^320657568097 is an apocalyptic number.

It is an amenable number.

320657568097 is a deficient number, since it is larger than the sum of its proper divisors (1).

320657568097 is an equidigital number, since it uses as much as digits as its factorization.

320657568097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19051200, while the sum is 58.

The spelling of 320657568097 in words is "three hundred twenty billion, six hundred fifty-seven million, five hundred sixty-eight thousand, ninety-seven".