20104444543 has 2 divisors, whose sum is σ = 20104444544. Its totient is φ = 20104444542.

The previous prime is 20104444541. The next prime is 20104444583. The reversal of 20104444543 is 34544440102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20104444543 - 2¹ = 20104444541 is a prime.

Together with 20104444541, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20104444541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10052222271 + 10052222272.

It is an arithmetic number, because the mean of its divisors is an integer number (10052222272).

Almost surely, 2^20104444543 is an apocalyptic number.

20104444543 is a deficient number, since it is larger than the sum of its proper divisors (1).

20104444543 is an equidigital number, since it uses as much as digits as its factorization.

20104444543 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30720, while the sum is 31.

Adding to 20104444543 its reverse (34544440102), we get a palindrome (54648884645).

The spelling of 20104444543 in words is "twenty billion, one hundred four million, four hundred forty-four thousand, five hundred forty-three".