20445132233 has 2 divisors, whose sum is σ = 20445132234. Its totient is φ = 20445132232.

The previous prime is 20445132181. The next prime is 20445132241. The reversal of 20445132233 is 33223154402.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17495881984 + 2949250249 = 132272^2 + 54307^2 .

It is a cyclic number.

It is not a de Polignac number, because 20445132233 - 2⁸ = 20445131977 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20445132196 and 20445132205.

It is not a weakly prime, because it can be changed into another prime (20445132133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10222566116 + 10222566117.

It is an arithmetic number, because the mean of its divisors is an integer number (10222566117).

Almost surely, 2^20445132233 is an apocalyptic number.

It is an amenable number.

20445132233 is a deficient number, since it is larger than the sum of its proper divisors (1).

20445132233 is an equidigital number, since it uses as much as digits as its factorization.

20445132233 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 29.

Adding to 20445132233 its reverse (33223154402), we get a palindrome (53668286635).

The spelling of 20445132233 in words is "twenty billion, four hundred forty-five million, one hundred thirty-two thousand, two hundred thirty-three".