20244044081 has 2 divisors, whose sum is σ = 20244044082. Its totient is φ = 20244044080.

The previous prime is 20244044077. The next prime is 20244044083. The reversal of 20244044081 is 18044044202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16174752400 + 4069291681 = 127180^2 + 63791^2 .

It is a cyclic number.

It is not a de Polignac number, because 20244044081 - 2² = 20244044077 is a prime.

It is a super-2 number, since 2×20244044081² (a number of 21 digits) contains 22 as substring.

Together with 20244044083, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20244044083) 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, 10122022040 + 10122022041.

It is an arithmetic number, because the mean of its divisors is an integer number (10122022041).

Almost surely, 2^20244044081 is an apocalyptic number.

It is an amenable number.

20244044081 is a deficient number, since it is larger than the sum of its proper divisors (1).

20244044081 is an equidigital number, since it uses as much as digits as its factorization.

20244044081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8192, while the sum is 29.

Adding to 20244044081 its reverse (18044044202), we get a palindrome (38288088283).

The spelling of 20244044081 in words is "twenty billion, two hundred forty-four million, forty-four thousand, eighty-one".