68457530017 has 2 divisors, whose sum is σ = 68457530018. Its totient is φ = 68457530016.

The previous prime is 68457530003. The next prime is 68457530143. The reversal of 68457530017 is 71003575486.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65495558241 + 2961971776 = 255921^2 + 54424^2 .

It is a cyclic number.

It is not a de Polignac number, because 68457530017 - 2¹¹ = 68457527969 is a prime.

It is not a weakly prime, because it can be changed into another prime (68457540017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34228765008 + 34228765009.

It is an arithmetic number, because the mean of its divisors is an integer number (34228765009).

Almost surely, 2^68457530017 is an apocalyptic number.

It is an amenable number.

68457530017 is a deficient number, since it is larger than the sum of its proper divisors (1).

68457530017 is an equidigital number, since it uses as much as digits as its factorization.

68457530017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 705600, while the sum is 46.

The spelling of 68457530017 in words is "sixty-eight billion, four hundred fifty-seven million, five hundred thirty thousand, seventeen".