68496717017 has 4 divisors (see below), whose sum is σ = 69174902436. Its totient is φ = 67818531600.

The previous prime is 68496716909. The next prime is 68496717019. The reversal of 68496717017 is 71071769486.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 37842309961 + 30654407056 = 194531^2 + 175084^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68496717017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68496717019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 339092558 + ... + 339092759.

It is an arithmetic number, because the mean of its divisors is an integer number (17293725609).

Almost surely, 2^68496717017 is an apocalyptic number.

It is an amenable number.

68496717017 is a deficient number, since it is larger than the sum of its proper divisors (678185419).

68496717017 is a wasteful number, since it uses less digits than its factorization.

68496717017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 678185418.

The product of its (nonzero) digits is 3556224, while the sum is 56.

The spelling of 68496717017 in words is "sixty-eight billion, four hundred ninety-six million, seven hundred seventeen thousand, seventeen".