20316005443 has 2 divisors, whose sum is σ = 20316005444. Its totient is φ = 20316005442.

The previous prime is 20316005401. The next prime is 20316005453. The reversal of 20316005443 is 34450061302.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20316005443 - 2⁹ = 20316004931 is a prime.

It is not a weakly prime, because it can be changed into another prime (20316005453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10158002721 + 10158002722.

It is an arithmetic number, because the mean of its divisors is an integer number (10158002722).

Almost surely, 2^20316005443 is an apocalyptic number.

20316005443 is a deficient number, since it is larger than the sum of its proper divisors (1).

20316005443 is an equidigital number, since it uses as much as digits as its factorization.

20316005443 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 28.

Adding to 20316005443 its reverse (34450061302), we get a palindrome (54766066745).

The spelling of 20316005443 in words is "twenty billion, three hundred sixteen million, five thousand, four hundred forty-three".