320320163543 has 2 divisors, whose sum is σ = 320320163544. Its totient is φ = 320320163542.

The previous prime is 320320163533. The next prime is 320320163561. The reversal of 320320163543 is 345361023023.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 320320163543 - 2¹² = 320320159447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320320163533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160160081771 + 160160081772.

It is an arithmetic number, because the mean of its divisors is an integer number (160160081772).

Almost surely, 2^320320163543 is an apocalyptic number.

320320163543 is a deficient number, since it is larger than the sum of its proper divisors (1).

320320163543 is an equidigital number, since it uses as much as digits as its factorization.

320320163543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38880, while the sum is 32.

Adding to 320320163543 its reverse (345361023023), we get a palindrome (665681186566).

The spelling of 320320163543 in words is "three hundred twenty billion, three hundred twenty million, one hundred sixty-three thousand, five hundred forty-three".