20523324433 has 2 divisors, whose sum is σ = 20523324434. Its totient is φ = 20523324432.

The previous prime is 20523324343. The next prime is 20523324499. The reversal of 20523324433 is 33442332502.

Together with previous prime (20523324343) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17049047184 + 3474277249 = 130572^2 + 58943^2 .

It is a cyclic number.

It is not a de Polignac number, because 20523324433 - 2²⁵ = 20489770001 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20523324395 and 20523324404.

It is not a weakly prime, because it can be changed into another prime (20523322433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10261662216 + 10261662217.

It is an arithmetic number, because the mean of its divisors is an integer number (10261662217).

Almost surely, 2^20523324433 is an apocalyptic number.

It is an amenable number.

20523324433 is a deficient number, since it is larger than the sum of its proper divisors (1).

20523324433 is an equidigital number, since it uses as much as digits as its factorization.

20523324433 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51840, while the sum is 31.

Adding to 20523324433 its reverse (33442332502), we get a palindrome (53965656935).

The spelling of 20523324433 in words is "twenty billion, five hundred twenty-three million, three hundred twenty-four thousand, four hundred thirty-three".