320375375897 has 2 divisors, whose sum is σ = 320375375898. Its totient is φ = 320375375896.

The previous prime is 320375375869. The next prime is 320375375911. The reversal of 320375375897 is 798573573023.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 169411267216 + 150964108681 = 411596^2 + 388541^2 .

It is a cyclic number.

It is not a de Polignac number, because 320375375897 - 2¹⁰ = 320375374873 is a prime.

It is a super-2 number, since 2×320375375897² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (320375377897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160187687948 + 160187687949.

It is an arithmetic number, because the mean of its divisors is an integer number (160187687949).

Almost surely, 2^320375375897 is an apocalyptic number.

It is an amenable number.

320375375897 is a deficient number, since it is larger than the sum of its proper divisors (1).

320375375897 is an equidigital number, since it uses as much as digits as its factorization.

320375375897 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 33339600, while the sum is 59.

The spelling of 320375375897 in words is "three hundred twenty billion, three hundred seventy-five million, three hundred seventy-five thousand, eight hundred ninety-seven".