68086190791 has 4 divisors (see below), whose sum is σ = 68179078552. Its totient is φ = 67993303032.

The previous prime is 68086190789. The next prime is 68086190797. The reversal of 68086190791 is 19709168086.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 68086190791 - 2¹ = 68086190789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68086190797) 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 3 ways as a sum of consecutive naturals, for example, 46442781 + ... + 46444246.

It is an arithmetic number, because the mean of its divisors is an integer number (17044769638).

Almost surely, 2^68086190791 is an apocalyptic number.

68086190791 is a deficient number, since it is larger than the sum of its proper divisors (92887761).

68086190791 is an equidigital number, since it uses as much as digits as its factorization.

68086190791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92887760.

The product of its (nonzero) digits is 1306368, while the sum is 55.

The spelling of 68086190791 in words is "sixty-eight billion, eighty-six million, one hundred ninety thousand, seven hundred ninety-one".