28086622489 has 2 divisors, whose sum is σ = 28086622490. Its totient is φ = 28086622488.

The previous prime is 28086622457. The next prime is 28086622513. The reversal of 28086622489 is 98422668082.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25927440400 + 2159182089 = 161020^2 + 46467^2 .

It is a cyclic number.

It is not a de Polignac number, because 28086622489 - 2⁵ = 28086622457 is a prime.

It is not a weakly prime, because it can be changed into another prime (28086622429) 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, 14043311244 + 14043311245.

It is an arithmetic number, because the mean of its divisors is an integer number (14043311245).

Almost surely, 2^28086622489 is an apocalyptic number.

It is an amenable number.

28086622489 is a deficient number, since it is larger than the sum of its proper divisors (1).

28086622489 is an equidigital number, since it uses as much as digits as its factorization.

28086622489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5308416, while the sum is 55.

The spelling of 28086622489 in words is "twenty-eight billion, eighty-six million, six hundred twenty-two thousand, four hundred eighty-nine".