68181222775 has 12 divisors (see below), whose sum is σ = 84660079672. Its totient is φ = 54470550240.

The previous prime is 68181222761. The next prime is 68181222799. The reversal of 68181222775 is 57722218186.

It is a happy number.

It is not a de Polignac number, because 68181222775 - 2¹⁷ = 68181091703 is a prime.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1842009 + ... + 1878658.

Almost surely, 2^68181222775 is an apocalyptic number.

68181222775 is a deficient number, since it is larger than the sum of its proper divisors (16478856897).

68181222775 is a wasteful number, since it uses less digits than its factorization.

68181222775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3721410 (or 3721405 counting only the distinct ones).

The product of its digits is 752640, while the sum is 49.

The spelling of 68181222775 in words is "sixty-eight billion, one hundred eighty-one million, two hundred twenty-two thousand, seven hundred seventy-five".