20532430133 has 2 divisors, whose sum is σ = 20532430134. Its totient is φ = 20532430132.

The previous prime is 20532430129. The next prime is 20532430189. The reversal of 20532430133 is 33103423502.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18609870724 + 1922559409 = 136418^2 + 43847^2 .

It is a cyclic number.

It is not a de Polignac number, because 20532430133 - 2² = 20532430129 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20532430103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10266215066 + 10266215067.

It is an arithmetic number, because the mean of its divisors is an integer number (10266215067).

Almost surely, 2^20532430133 is an apocalyptic number.

It is an amenable number.

20532430133 is a deficient number, since it is larger than the sum of its proper divisors (1).

20532430133 is an equidigital number, since it uses as much as digits as its factorization.

20532430133 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 26.

Adding to 20532430133 its reverse (33103423502), we get a palindrome (53635853635).

The spelling of 20532430133 in words is "twenty billion, five hundred thirty-two million, four hundred thirty thousand, one hundred thirty-three".