668675242576866 has 16 divisors (see below), whose sum is σ = 1528400554461504. Its totient is φ = 191050069307664.

The previous prime is 668675242576841. The next prime is 668675242576927.

668675242576866 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7960419554445 + ... + 7960419554528.

It is an arithmetic number, because the mean of its divisors is an integer number (95525034653844).

Almost surely, 2^{668675242576866} is an apocalyptic number.

668675242576866 is an abundant number, since it is smaller than the sum of its proper divisors (859725311884638).

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

668675242576866 is a wasteful number, since it uses less digits than its factorization.

668675242576866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15920839108985.

The product of its digits is 58525286400, while the sum is 84.

The spelling of 668675242576866 in words is "six hundred sixty-eight trillion, six hundred seventy-five billion, two hundred forty-two million, five hundred seventy-six thousand, eight hundred sixty-six".