671705056012 has 24 divisors (see below), whose sum is σ = 1179766248192. Its totient is φ = 334629187200.

The previous prime is 671705056007. The next prime is 671705056049. The reversal of 671705056012 is 210650507176.

It is a happy number.

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, 21714837 + ... + 21745747.

It is an arithmetic number, because the mean of its divisors is an integer number (49156927008).

Almost surely, 2^671705056012 is an apocalyptic number.

It is an amenable number.

671705056012 is a deficient number, since it is larger than the sum of its proper divisors (508061192180).

671705056012 is a wasteful number, since it uses less digits than its factorization.

671705056012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50529 (or 50527 counting only the distinct ones).

The product of its (nonzero) digits is 88200, while the sum is 40.

The spelling of 671705056012 in words is "six hundred seventy-one billion, seven hundred five million, fifty-six thousand, twelve".