68194638339 has 8 divisors (see below), whose sum is σ = 91826444112. Its totient is φ = 45012962400.

The previous prime is 68194638331. The next prime is 68194638349. The reversal of 68194638339 is 93383649186.

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

It is not a de Polignac number, because 68194638339 - 2³ = 68194638331 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68194638331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112532104 + ... + 112532709.

It is an arithmetic number, because the mean of its divisors is an integer number (11478305514).

Almost surely, 2^68194638339 is an apocalyptic number.

68194638339 is a deficient number, since it is larger than the sum of its proper divisors (23631805773).

68194638339 is a wasteful number, since it uses less digits than its factorization.

68194638339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225064917.

The product of its digits is 20155392, while the sum is 60.

The spelling of 68194638339 in words is "sixty-eight billion, one hundred ninety-four million, six hundred thirty-eight thousand, three hundred thirty-nine".