671081226566 has 16 divisors (see below), whose sum is σ = 1012369700160. Its totient is φ = 333625343040.

The previous prime is 671081226553. The next prime is 671081226577. The reversal of 671081226566 is 665622180176.

It is a congruent number.

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, 1829930 + ... + 2165826.

It is an arithmetic number, because the mean of its divisors is an integer number (63273106260).

Almost surely, 2^671081226566 is an apocalyptic number.

671081226566 is a deficient number, since it is larger than the sum of its proper divisors (341288473594).

671081226566 is a wasteful number, since it uses less digits than its factorization.

671081226566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341599.

The product of its (nonzero) digits is 1451520, while the sum is 50.

The spelling of 671081226566 in words is "six hundred seventy-one billion, eighty-one million, two hundred twenty-six thousand, five hundred sixty-six".