20033243243 has 32 divisors (see below), whose sum is σ = 22556093952. Its totient is φ = 17667072000.

The previous prime is 20033243227. The next prime is 20033243287. The reversal of 20033243243 is 34234233002.

It is a cyclic number.

It is not a de Polignac number, because 20033243243 - 2⁴ = 20033243227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20033203243) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23485205 + ... + 23486057.

It is an arithmetic number, because the mean of its divisors is an integer number (704877936).

Almost surely, 2^20033243243 is an apocalyptic number.

20033243243 is a deficient number, since it is larger than the sum of its proper divisors (2522850709).

20033243243 is a wasteful number, since it uses less digits than its factorization.

20033243243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1575.

The product of its (nonzero) digits is 10368, while the sum is 26.

Adding to 20033243243 its reverse (34234233002), we get a palindrome (54267476245).

The spelling of 20033243243 in words is "twenty billion, thirty-three million, two hundred forty-three thousand, two hundred forty-three".