68338170805 has 16 divisors (see below), whose sum is σ = 82660952304. Its totient is φ = 54234319360.

The previous prime is 68338170787. The next prime is 68338170869. The reversal of 68338170805 is 50807183386.

It can be written as a sum of positive squares in 8 ways, for example, as 25462116 + 68312708689 = 5046^2 + 261367^2 .

It is not a de Polignac number, because 68338170805 - 2⁹ = 68338170293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 989295 + ... + 1056115.

It is an arithmetic number, because the mean of its divisors is an integer number (5166309519).

Almost surely, 2^68338170805 is an apocalyptic number.

It is an amenable number.

68338170805 is a deficient number, since it is larger than the sum of its proper divisors (14322781499).

68338170805 is a wasteful number, since it uses less digits than its factorization.

68338170805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68456.

The product of its (nonzero) digits is 967680, while the sum is 49.

The spelling of 68338170805 in words is "sixty-eight billion, three hundred thirty-eight million, one hundred seventy thousand, eight hundred five".