20443324073 has 2 divisors, whose sum is σ = 20443324074. Its totient is φ = 20443324072.

The previous prime is 20443324009. The next prime is 20443324081. The reversal of 20443324073 is 37042334402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17586207769 + 2857116304 = 132613^2 + 53452^2 .

It is a cyclic number.

It is not a de Polignac number, because 20443324073 - 2⁶ = 20443324009 is a prime.

It is not a weakly prime, because it can be changed into another prime (20443324093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10221662036 + 10221662037.

It is an arithmetic number, because the mean of its divisors is an integer number (10221662037).

Almost surely, 2^20443324073 is an apocalyptic number.

It is an amenable number.

20443324073 is a deficient number, since it is larger than the sum of its proper divisors (1).

20443324073 is an equidigital number, since it uses as much as digits as its factorization.

20443324073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 32.

Adding to 20443324073 its reverse (37042334402), we get a palindrome (57485658475).

The spelling of 20443324073 in words is "twenty billion, four hundred forty-three million, three hundred twenty-four thousand, seventy-three".