67939434685 has 8 divisors (see below), whose sum is σ = 81596012256. Its totient is φ = 54305754000.

The previous prime is 67939434659. The next prime is 67939434707. The reversal of 67939434685 is 58643493976.

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

It is not a de Polignac number, because 67939434685 - 2⁵ = 67939434653 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 (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5717691 + ... + 5729560.

It is an arithmetic number, because the mean of its divisors is an integer number (10199501532).

Almost surely, 2^67939434685 is an apocalyptic number.

It is an amenable number.

67939434685 is a deficient number, since it is larger than the sum of its proper divisors (13656577571).

67939434685 is a wasteful number, since it uses less digits than its factorization.

67939434685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11448443.

The product of its digits is 117573120, while the sum is 64.

The spelling of 67939434685 in words is "sixty-seven billion, nine hundred thirty-nine million, four hundred thirty-four thousand, six hundred eighty-five".