20023404243 has 8 divisors (see below), whose sum is σ = 26797122000. Its totient is φ = 13299311328.

The previous prime is 20023404157. The next prime is 20023404251. The reversal of 20023404243 is 34240432002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20023404243 - 2⁹ = 20023403731 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20023404263) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12405268 + ... + 12406881.

It is an arithmetic number, because the mean of its divisors is an integer number (3349640250).

Almost surely, 2^20023404243 is an apocalyptic number.

20023404243 is a deficient number, since it is larger than the sum of its proper divisors (6773717757).

20023404243 is a wasteful number, since it uses less digits than its factorization.

20023404243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24812421.

The product of its (nonzero) digits is 4608, while the sum is 24.

Adding to 20023404243 its reverse (34240432002), we get a palindrome (54263836245).

The spelling of 20023404243 in words is "twenty billion, twenty-three million, four hundred four thousand, two hundred forty-three".