67991293135 has 8 divisors (see below), whose sum is σ = 81868016160. Its totient is φ = 54207391584.

The previous prime is 67991293103. The next prime is 67991293169. The reversal of 67991293135 is 53139219976.

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 67991293135 - 2⁵ = 67991293103 is a prime.

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, 23203755 + ... + 23206684.

It is an arithmetic number, because the mean of its divisors is an integer number (10233502020).

Almost surely, 2^67991293135 is an apocalyptic number.

67991293135 is a deficient number, since it is larger than the sum of its proper divisors (13876723025).

67991293135 is a wasteful number, since it uses less digits than its factorization.

67991293135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46410737.

The product of its digits is 2755620, while the sum is 55.

The spelling of 67991293135 in words is "sixty-seven billion, nine hundred ninety-one million, two hundred ninety-three thousand, one hundred thirty-five".