20444223043 has 4 divisors (see below), whose sum is σ = 20879206560. Its totient is φ = 20009239528.

The previous prime is 20444223031. The next prime is 20444223083. The reversal of 20444223043 is 34032244402.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20444223043 - 2⁹ = 20444222531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20444223083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 217491688 + ... + 217491781.

It is an arithmetic number, because the mean of its divisors is an integer number (5219801640).

Almost surely, 2^20444223043 is an apocalyptic number.

20444223043 is a deficient number, since it is larger than the sum of its proper divisors (434983517).

20444223043 is an equidigital number, since it uses as much as digits as its factorization.

20444223043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434983516.

The product of its (nonzero) digits is 18432, while the sum is 28.

Adding to 20444223043 its reverse (34032244402), we get a palindrome (54476467445).

The spelling of 20444223043 in words is "twenty billion, four hundred forty-four million, two hundred twenty-three thousand, forty-three".