68031357189 has 8 divisors (see below), whose sum is σ = 92419957152. Its totient is φ = 44498497680.

The previous prime is 68031357167. The next prime is 68031357253. The reversal of 68031357189 is 98175313086.

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

It is a de Polignac number, because none of the positive numbers 2^k-68031357189 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68031357389) 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 7 ways as a sum of consecutive naturals, for example, 213934927 + ... + 213935244.

It is an arithmetic number, because the mean of its divisors is an integer number (11552494644).

Almost surely, 2^68031357189 is an apocalyptic number.

It is an amenable number.

68031357189 is a deficient number, since it is larger than the sum of its proper divisors (24388599963).

68031357189 is a wasteful number, since it uses less digits than its factorization.

68031357189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427870227.

The product of its (nonzero) digits is 1088640, while the sum is 51.

The spelling of 68031357189 in words is "sixty-eight billion, thirty-one million, three hundred fifty-seven thousand, one hundred eighty-nine".