20443123424 has 48 divisors (see below), whose sum is σ = 43093814400. Its totient is φ = 9512177664.

The previous prime is 20443123417. The next prime is 20443123469. The reversal of 20443123424 is 42432134402.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 162704 + ... + 259535.

It is an arithmetic number, because the mean of its divisors is an integer number (897787800).

Almost surely, 2^20443123424 is an apocalyptic number.

It is an amenable number.

20443123424 is an abundant number, since it is smaller than the sum of its proper divisors (22650690976).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20443123424 is a wasteful number, since it uses less digits than its factorization.

20443123424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422355 (or 422347 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 29.

Adding to 20443123424 its reverse (42432134402), we get a palindrome (62875257826).

The spelling of 20443123424 in words is "twenty billion, four hundred forty-three million, one hundred twenty-three thousand, four hundred twenty-four".