20133243243 has 24 divisors (see below), whose sum is σ = 30376276320. Its totient is φ = 12833493120.

The previous prime is 20133243227. The next prime is 20133243311. The reversal of 20133243243 is 34234233102.

20133243243 is a `hidden beast` number, since 2 + 0 + 1 + 332 + 4 + 324 + 3 = 666.

It is not a de Polignac number, because 20133243243 - 2⁴ = 20133243227 is a prime.

20133243243 is a modest number, since divided by 243243 gives 20133 as remainder.

It is not an unprimeable number, because it can be changed into a prime (20133243443) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 347578 + ... + 401343.

It is an arithmetic number, because the mean of its divisors is an integer number (1265678180).

Almost surely, 2^20133243243 is an apocalyptic number.

20133243243 is a deficient number, since it is larger than the sum of its proper divisors (10243033077).

20133243243 is a wasteful number, since it uses less digits than its factorization.

20133243243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 749059 (or 749056 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 27.

Adding to 20133243243 its reverse (34234233102), we get a palindrome (54367476345).

The spelling of 20133243243 in words is "twenty billion, one hundred thirty-three million, two hundred forty-three thousand, two hundred forty-three".