68866820874 has 12 divisors (see below), whose sum is σ = 149211445266. Its totient is φ = 22955606952.

The previous prime is 68866820843. The next prime is 68866820903. The reversal of 68866820874 is 47802866886.

It can be written as a sum of positive squares in only one way, i.e., 66571740225 + 2295080649 = 258015^2 + 47907^2 .

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 5 ways as a sum of consecutive naturals, for example, 1912967229 + ... + 1912967264.

Almost surely, 2^68866820874 is an apocalyptic number.

68866820874 is an abundant number, since it is smaller than the sum of its proper divisors (80344624392).

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

68866820874 is a wasteful number, since it uses less digits than its factorization.

68866820874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3825934501 (or 3825934498 counting only the distinct ones).

The product of its (nonzero) digits is 49545216, while the sum is 63.

The spelling of 68866820874 in words is "sixty-eight billion, eight hundred sixty-six million, eight hundred twenty thousand, eight hundred seventy-four".