68250759817 has 8 divisors (see below), whose sum is σ = 68450892680. Its totient is φ = 68050920960.

The previous prime is 68250759791. The next prime is 68250759853. The reversal of 68250759817 is 71895705286.

It can be written as a sum of positive squares in 4 ways, for example, as 473323536 + 67777436281 = 21756^2 + 260341^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68250759817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68250759917) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 395833 + ... + 541465.

It is an arithmetic number, because the mean of its divisors is an integer number (8556361585).

Almost surely, 2^68250759817 is an apocalyptic number.

It is an amenable number.

68250759817 is a deficient number, since it is larger than the sum of its proper divisors (200132863).

68250759817 is a wasteful number, since it uses less digits than its factorization.

68250759817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147003.

The product of its (nonzero) digits is 8467200, while the sum is 58.

The spelling of 68250759817 in words is "sixty-eight billion, two hundred fifty million, seven hundred fifty-nine thousand, eight hundred seventeen".