68888681986 has 16 divisors (see below), whose sum is σ = 105540595200. Its totient is φ = 33708608640.

The previous prime is 68888681971. The next prime is 68888681989. The reversal of 68888681986 is 68918688886.

It is not an unprimeable number, because it can be changed into a prime (68888681989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1447591 + ... + 1494421.

It is an arithmetic number, because the mean of its divisors is an integer number (6596287200).

Almost surely, 2^68888681986 is an apocalyptic number.

68888681986 is a deficient number, since it is larger than the sum of its proper divisors (36651913214).

68888681986 is a wasteful number, since it uses less digits than its factorization.

68888681986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62529.

The product of its digits is 509607936, while the sum is 76.

The spelling of 68888681986 in words is "sixty-eight billion, eight hundred eighty-eight million, six hundred eighty-one thousand, nine hundred eighty-six".