68794612139 has 8 divisors (see below), whose sum is σ = 78311653632. Its totient is φ = 59821401640.

The previous prime is 68794612123. The next prime is 68794612171. The reversal of 68794612139 is 93121649786.

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

It is not a de Polignac number, because 68794612139 - 2⁴ = 68794612123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68794612199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135957479 + ... + 135957984.

It is an arithmetic number, because the mean of its divisors is an integer number (9788956704).

Almost surely, 2^68794612139 is an apocalyptic number.

68794612139 is a deficient number, since it is larger than the sum of its proper divisors (9517041493).

68794612139 is a wasteful number, since it uses less digits than its factorization.

68794612139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271915497.

The product of its digits is 3919104, while the sum is 56.

The spelling of 68794612139 in words is "sixty-eight billion, seven hundred ninety-four million, six hundred twelve thousand, one hundred thirty-nine".