648281450017 has 2 divisors, whose sum is σ = 648281450018. Its totient is φ = 648281450016.

The previous prime is 648281449999. The next prime is 648281450039. The reversal of 648281450017 is 710054182846.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 612738266176 + 35543183841 = 782776^2 + 188529^2 .

It is a cyclic number.

It is not a de Polignac number, because 648281450017 - 2¹⁵ = 648281417249 is a prime.

It is a super-2 number, since 2×648281450017² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (648281450317) 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, 324140725008 + 324140725009.

It is an arithmetic number, because the mean of its divisors is an integer number (324140725009).

Almost surely, 2^648281450017 is an apocalyptic number.

It is an amenable number.

648281450017 is a deficient number, since it is larger than the sum of its proper divisors (1).

648281450017 is an equidigital number, since it uses as much as digits as its factorization.

648281450017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 430080, while the sum is 46.

The spelling of 648281450017 in words is "six hundred forty-eight billion, two hundred eighty-one million, four hundred fifty thousand, seventeen".