20133453133 has 2 divisors, whose sum is σ = 20133453134. Its totient is φ = 20133453132.

The previous prime is 20133453083. The next prime is 20133453139. The reversal of 20133453133 is 33135433102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16863100164 + 3270352969 = 129858^2 + 57187^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20133453133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20133453139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10066726566 + 10066726567.

It is an arithmetic number, because the mean of its divisors is an integer number (10066726567).

Almost surely, 2^20133453133 is an apocalyptic number.

It is an amenable number.

20133453133 is a deficient number, since it is larger than the sum of its proper divisors (1).

20133453133 is an equidigital number, since it uses as much as digits as its factorization.

20133453133 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9720, while the sum is 28.

Adding to 20133453133 its reverse (33135433102), we get a palindrome (53268886235).

The spelling of 20133453133 in words is "twenty billion, one hundred thirty-three million, four hundred fifty-three thousand, one hundred thirty-three".