68811942886 has 4 divisors (see below), whose sum is σ = 103217914332. Its totient is φ = 34405971442.

The previous prime is 68811942853. The next prime is 68811942977. The reversal of 68811942886 is 68824911886.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 68824911886 = 2 ⋅34412455943.

It is a super-2 number, since 2×68811942886² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17202985720 + ... + 17202985723.

It is an arithmetic number, because the mean of its divisors is an integer number (25804478583).

Almost surely, 2^68811942886 is an apocalyptic number.

68811942886 is a deficient number, since it is larger than the sum of its proper divisors (34405971446).

68811942886 is a wasteful number, since it uses less digits than its factorization.

68811942886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34405971445.

The product of its digits is 10616832, while the sum is 61.

The spelling of 68811942886 in words is "sixty-eight billion, eight hundred eleven million, nine hundred forty-two thousand, eight hundred eighty-six".