67931139605 has 8 divisors (see below), whose sum is σ = 93162705792. Its totient is φ = 46581352848.

The previous prime is 67931139589. The next prime is 67931139623. The reversal of 67931139605 is 50693113976.

67931139605 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 67931139605 - 2⁴ = 67931139589 is a prime.

It is a super-2 number, since 2×67931139605² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 970444817 + ... + 970444886.

It is an arithmetic number, because the mean of its divisors is an integer number (11645338224).

Almost surely, 2^67931139605 is an apocalyptic number.

It is an amenable number.

67931139605 is a deficient number, since it is larger than the sum of its proper divisors (25231566187).

67931139605 is a wasteful number, since it uses less digits than its factorization.

67931139605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1940889715.

The product of its (nonzero) digits is 918540, while the sum is 50.

The spelling of 67931139605 in words is "sixty-seven billion, nine hundred thirty-one million, one hundred thirty-nine thousand, six hundred five".