320522425477 has 2 divisors, whose sum is σ = 320522425478. Its totient is φ = 320522425476.

The previous prime is 320522425417. The next prime is 320522425493. The reversal of 320522425477 is 774524225023.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 320258655396 + 263770081 = 565914^2 + 16241^2 .

It is a cyclic number.

It is not a de Polignac number, because 320522425477 - 2²⁷ = 320388207749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320522425417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160261212738 + 160261212739.

It is an arithmetic number, because the mean of its divisors is an integer number (160261212739).

Almost surely, 2^320522425477 is an apocalyptic number.

It is an amenable number.

320522425477 is a deficient number, since it is larger than the sum of its proper divisors (1).

320522425477 is an equidigital number, since it uses as much as digits as its factorization.

320522425477 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 940800, while the sum is 43.

The spelling of 320522425477 in words is "three hundred twenty billion, five hundred twenty-two million, four hundred twenty-five thousand, four hundred seventy-seven".