28045508231473 has 2 divisors, whose sum is σ = 28045508231474. Its totient is φ = 28045508231472.

The previous prime is 28045508231471. The next prime is 28045508231497. The reversal of 28045508231473 is 37413280554082.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27930728212209 + 114780019264 = 5284953^2 + 338792^2 .

It is a cyclic number.

It is not a de Polignac number, because 28045508231473 - 2¹ = 28045508231471 is a prime.

Together with 28045508231471, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 28045508231473.

It is not a weakly prime, because it can be changed into another prime (28045508231471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14022754115736 + 14022754115737.

It is an arithmetic number, because the mean of its divisors is an integer number (14022754115737).

Almost surely, 2^{28045508231473} is an apocalyptic number.

It is an amenable number.

28045508231473 is a deficient number, since it is larger than the sum of its proper divisors (1).

28045508231473 is an equidigital number, since it uses as much as digits as its factorization.

28045508231473 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6451200, while the sum is 52.

The spelling of 28045508231473 in words is "twenty-eight trillion, forty-five billion, five hundred eight million, two hundred thirty-one thousand, four hundred seventy-three".