20234443253 has 2 divisors, whose sum is σ = 20234443254. Its totient is φ = 20234443252.

The previous prime is 20234443249. The next prime is 20234443261. The reversal of 20234443253 is 35234443202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20057074129 + 177369124 = 141623^2 + 13318^2 .

It is a cyclic number.

It is not a de Polignac number, because 20234443253 - 2² = 20234443249 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20234443283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10117221626 + 10117221627.

It is an arithmetic number, because the mean of its divisors is an integer number (10117221627).

Almost surely, 2^20234443253 is an apocalyptic number.

It is an amenable number.

20234443253 is a deficient number, since it is larger than the sum of its proper divisors (1).

20234443253 is an equidigital number, since it uses as much as digits as its factorization.

20234443253 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69120, while the sum is 32.

Adding to 20234443253 its reverse (35234443202), we get a palindrome (55468886455).

The spelling of 20234443253 in words is "twenty billion, two hundred thirty-four million, four hundred forty-three thousand, two hundred fifty-three".