68851663194 has 16 divisors (see below), whose sum is σ = 141425038368. Its totient is φ = 22330269072.

The previous prime is 68851663189. The next prime is 68851663259. The reversal of 68851663194 is 49136615886.

It is a Curzon number.

It is an unprimeable number.

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, 155071092 + ... + 155071535.

It is an arithmetic number, because the mean of its divisors is an integer number (8839064898).

Almost surely, 2^68851663194 is an apocalyptic number.

68851663194 is an abundant number, since it is smaller than the sum of its proper divisors (72573375174).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68851663194 is a wasteful number, since it uses less digits than its factorization.

68851663194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310142669.

The product of its digits is 7464960, while the sum is 57.

The spelling of 68851663194 in words is "sixty-eight billion, eight hundred fifty-one million, six hundred sixty-three thousand, one hundred ninety-four".