320523470497 has 2 divisors, whose sum is σ = 320523470498. Its totient is φ = 320523470496.

The previous prime is 320523470489. The next prime is 320523470507. The reversal of 320523470497 is 794074325023.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 239731661376 + 80791809121 = 489624^2 + 284239^2 .

It is a cyclic number.

It is not a de Polignac number, because 320523470497 - 2³ = 320523470489 is a prime.

It is not a weakly prime, because it can be changed into another prime (320523470437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160261735248 + 160261735249.

It is an arithmetic number, because the mean of its divisors is an integer number (160261735249).

Almost surely, 2^320523470497 is an apocalyptic number.

It is an amenable number.

320523470497 is a deficient number, since it is larger than the sum of its proper divisors (1).

320523470497 is an equidigital number, since it uses as much as digits as its factorization.

320523470497 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1270080, while the sum is 46.

The spelling of 320523470497 in words is "three hundred twenty billion, five hundred twenty-three million, four hundred seventy thousand, four hundred ninety-seven".