68817078278 has 16 divisors (see below), whose sum is σ = 112185926160. Its totient is φ = 31470335136.

The previous prime is 68817078193. The next prime is 68817078283. The reversal of 68817078278 is 87287071886.

It is a self number, because there is not a number n which added to its sum of digits gives 68817078278.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12138500 + ... + 12144167.

It is an arithmetic number, because the mean of its divisors is an integer number (7011620385).

Almost surely, 2^68817078278 is an apocalyptic number.

68817078278 is a deficient number, since it is larger than the sum of its proper divisors (43368847882).

68817078278 is a wasteful number, since it uses less digits than its factorization.

68817078278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24282791.

The product of its (nonzero) digits is 16859136, while the sum is 62.

The spelling of 68817078278 in words is "sixty-eight billion, eight hundred seventeen million, seventy-eight thousand, two hundred seventy-eight".