20331443443 has 2 divisors, whose sum is σ = 20331443444. Its totient is φ = 20331443442.

The previous prime is 20331443399. The next prime is 20331443467. The reversal of 20331443443 is 34434413302.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20331443443 - 2¹⁷ = 20331312371 is a prime.

It is not a weakly prime, because it can be changed into another prime (20331443243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10165721721 + 10165721722.

It is an arithmetic number, because the mean of its divisors is an integer number (10165721722).

Almost surely, 2^20331443443 is an apocalyptic number.

20331443443 is a deficient number, since it is larger than the sum of its proper divisors (1).

20331443443 is an equidigital number, since it uses as much as digits as its factorization.

20331443443 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41472, while the sum is 31.

Adding to 20331443443 its reverse (34434413302), we get a palindrome (54765856745).

The spelling of 20331443443 in words is "twenty billion, three hundred thirty-one million, four hundred forty-three thousand, four hundred forty-three".