20533100243 has 8 divisors (see below), whose sum is σ = 21039177600. Its totient is φ = 20027273920.

The previous prime is 20533100239. The next prime is 20533100251. The reversal of 20533100243 is 34200133502.

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

It is a cyclic number.

It is not a de Polignac number, because 20533100243 - 2² = 20533100239 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20533100233) 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, 108533 + ... + 229881.

It is an arithmetic number, because the mean of its divisors is an integer number (2629897200).

Almost surely, 2^20533100243 is an apocalyptic number.

20533100243 is a deficient number, since it is larger than the sum of its proper divisors (506077357).

20533100243 is a wasteful number, since it uses less digits than its factorization.

20533100243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125517.

The product of its (nonzero) digits is 2160, while the sum is 23.

Adding to 20533100243 its reverse (34200133502), we get a palindrome (54733233745).

The spelling of 20533100243 in words is "twenty billion, five hundred thirty-three million, one hundred thousand, two hundred forty-three".