68134536239 has 16 divisors (see below), whose sum is σ = 85277511936. Its totient is φ = 52885248000.

The previous prime is 68134536233. The next prime is 68134536293. The reversal of 68134536239 is 93263543186.

It is a cyclic number.

It is not a de Polignac number, because 68134536239 - 2¹² = 68134532143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68134536233) 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 15 ways as a sum of consecutive naturals, for example, 1701737 + ... + 1741314.

It is an arithmetic number, because the mean of its divisors is an integer number (5329844496).

Almost surely, 2^68134536239 is an apocalyptic number.

68134536239 is a deficient number, since it is larger than the sum of its proper divisors (17142975697).

68134536239 is a wasteful number, since it uses less digits than its factorization.

68134536239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3443326.

The product of its digits is 2799360, while the sum is 50.

The spelling of 68134536239 in words is "sixty-eight billion, one hundred thirty-four million, five hundred thirty-six thousand, two hundred thirty-nine".