20043203042243 has 4 divisors (see below), whose sum is σ = 20053091156280. Its totient is φ = 20033314928208.

The previous prime is 20043203042143. The next prime is 20043203042279. The reversal of 20043203042243 is 34224030234002.

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 20043203042243 - 2¹⁰ = 20043203041219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20043203042293) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4944053978 + ... + 4944058031.

It is an arithmetic number, because the mean of its divisors is an integer number (5013272789070).

Almost surely, 2^{20043203042243} is an apocalyptic number.

20043203042243 is a deficient number, since it is larger than the sum of its proper divisors (9888114037).

20043203042243 is an equidigital number, since it uses as much as digits as its factorization.

20043203042243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9888114036.

The product of its (nonzero) digits is 27648, while the sum is 29.

Adding to 20043203042243 its reverse (34224030234002), we get a palindrome (54267233276245).

The spelling of 20043203042243 in words is "twenty trillion, forty-three billion, two hundred three million, forty-two thousand, two hundred forty-three".