671320072866 has 16 divisors (see below), whose sum is σ = 1413305416800. Its totient is φ = 211995812448.

The previous prime is 671320072853. The next prime is 671320072873. The reversal of 671320072866 is 668270023176.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2944386171 + ... + 2944386398.

It is an arithmetic number, because the mean of its divisors is an integer number (88331588550).

Almost surely, 2^671320072866 is an apocalyptic number.

671320072866 is an abundant number, since it is smaller than the sum of its proper divisors (741985343934).

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

671320072866 is a wasteful number, since it uses less digits than its factorization.

671320072866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5888772593.

The product of its (nonzero) digits is 1016064, while the sum is 48.

The spelling of 671320072866 in words is "six hundred seventy-one billion, three hundred twenty million, seventy-two thousand, eight hundred sixty-six".