28248407617 has 2 divisors, whose sum is σ = 28248407618. Its totient is φ = 28248407616.

The previous prime is 28248407587. The next prime is 28248407623. The reversal of 28248407617 is 71670484282.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18753659136 + 9494748481 = 136944^2 + 97441^2 .

It is a cyclic number.

It is not a de Polignac number, because 28248407617 - 2⁷ = 28248407489 is a prime.

It is not a weakly prime, because it can be changed into another prime (28248404617) 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, 14124203808 + 14124203809.

It is an arithmetic number, because the mean of its divisors is an integer number (14124203809).

Almost surely, 2^28248407617 is an apocalyptic number.

It is an amenable number.

28248407617 is a deficient number, since it is larger than the sum of its proper divisors (1).

28248407617 is an equidigital number, since it uses as much as digits as its factorization.

28248407617 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1204224, while the sum is 49.

The spelling of 28248407617 in words is "twenty-eight billion, two hundred forty-eight million, four hundred seven thousand, six hundred seventeen".