20443323424 has 24 divisors (see below), whose sum is σ = 40555036368. Its totient is φ = 10143631680.

The previous prime is 20443323421. The next prime is 20443323431. The reversal of 20443323424 is 42432334402.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20443323421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2434182 + ... + 2442565.

It is an arithmetic number, because the mean of its divisors is an integer number (1689793182).

Almost surely, 2^20443323424 is an apocalyptic number.

It is an amenable number.

20443323424 is a deficient number, since it is larger than the sum of its proper divisors (20111712944).

20443323424 is a wasteful number, since it uses less digits than its factorization.

20443323424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4876888 (or 4876880 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 31.

Adding to 20443323424 its reverse (42432334402), we get a palindrome (62875657826).

The spelling of 20443323424 in words is "twenty billion, four hundred forty-three million, three hundred twenty-three thousand, four hundred twenty-four".