68851815886 has 32 divisors (see below), whose sum is σ = 118996600320. Its totient is φ = 29267368416.

The previous prime is 68851815871. The next prime is 68851815937.

68851815886 is nontrivially palindromic in base 10.

It is a Smith number, since the sum of its digits (64) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1209655 + ... + 1265293.

It is an arithmetic number, because the mean of its divisors is an integer number (3718643760).

Almost surely, 2^68851815886 is an apocalyptic number.

68851815886 is a deficient number, since it is larger than the sum of its proper divisors (50144784434).

68851815886 is a wasteful number, since it uses less digits than its factorization.

68851815886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56368.

The product of its digits is 29491200, while the sum is 64.

The spelling of 68851815886 in words is "sixty-eight billion, eight hundred fifty-one million, eight hundred fifteen thousand, eight hundred eighty-six".