320210478569 has 2 divisors, whose sum is σ = 320210478570. Its totient is φ = 320210478568.

The previous prime is 320210478493. The next prime is 320210478571. The reversal of 320210478569 is 965874012023.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 205213530025 + 114996948544 = 453005^2 + 339112^2 .

It is a cyclic number.

It is not a de Polignac number, because 320210478569 - 2²⁰ = 320209429993 is a prime.

It is a super-2 number, since 2×320210478569² (a number of 24 digits) contains 22 as substring.

Together with 320210478571, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (320210478769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160105239284 + 160105239285.

It is an arithmetic number, because the mean of its divisors is an integer number (160105239285).

It is a 2-persistent number, because it is pandigital, and so is 2⋅320210478569 = 640420957138, but 3⋅320210478569 = 960631435707 is not.

Almost surely, 2^320210478569 is an apocalyptic number.

It is an amenable number.

320210478569 is a deficient number, since it is larger than the sum of its proper divisors (1).

320210478569 is an equidigital number, since it uses as much as digits as its factorization.

320210478569 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 725760, while the sum is 47.

The spelling of 320210478569 in words is "three hundred twenty billion, two hundred ten million, four hundred seventy-eight thousand, five hundred sixty-nine".