28080223441 has 2 divisors, whose sum is σ = 28080223442. Its totient is φ = 28080223440.

The previous prime is 28080223439. The next prime is 28080223447. The reversal of 28080223441 is 14432208082.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25174582225 + 2905641216 = 158665^2 + 53904^2 .

It is a cyclic number.

It is not a de Polignac number, because 28080223441 - 2¹ = 28080223439 is a prime.

Together with 28080223439, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 28080223397 and 28080223406.

It is not a weakly prime, because it can be changed into another prime (28080223447) 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, 14040111720 + 14040111721.

It is an arithmetic number, because the mean of its divisors is an integer number (14040111721).

Almost surely, 2^28080223441 is an apocalyptic number.

It is an amenable number.

28080223441 is a deficient number, since it is larger than the sum of its proper divisors (1).

28080223441 is an equidigital number, since it uses as much as digits as its factorization.

28080223441 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24576, while the sum is 34.

The spelling of 28080223441 in words is "twenty-eight billion, eighty million, two hundred twenty-three thousand, four hundred forty-one".