68758436345017 has 2 divisors, whose sum is σ = 68758436345018. Its totient is φ = 68758436345016.

The previous prime is 68758436344979. The next prime is 68758436345041. The reversal of 68758436345017 is 71054363485786.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54346664136361 + 14411772208656 = 7372019^2 + 3796284^2 .

It is a cyclic number.

It is not a de Polignac number, because 68758436345017 - 2¹⁵ = 68758436312249 is a prime.

It is a super-2 number, since 2×68758436345017² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (68758436345077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34379218172508 + 34379218172509.

It is an arithmetic number, because the mean of its divisors is an integer number (34379218172509).

Almost surely, 2^{68758436345017} is an apocalyptic number.

It is an amenable number.

68758436345017 is a deficient number, since it is larger than the sum of its proper divisors (1).

68758436345017 is an equidigital number, since it uses as much as digits as its factorization.

68758436345017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 406425600, while the sum is 67.

The spelling of 68758436345017 in words is "sixty-eight trillion, seven hundred fifty-eight billion, four hundred thirty-six million, three hundred forty-five thousand, seventeen".