671796520012 has 12 divisors (see below), whose sum is σ = 1202984466376. Its totient is φ = 328086672480.

The previous prime is 671796519949. The next prime is 671796520049. The reversal of 671796520012 is 210025697176.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1952896689 + ... + 1952897032.

Almost surely, 2^671796520012 is an apocalyptic number.

It is an amenable number.

671796520012 is a deficient number, since it is larger than the sum of its proper divisors (531187946364).

671796520012 is a wasteful number, since it uses less digits than its factorization.

671796520012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3905793768 (or 3905793766 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 46.

The spelling of 671796520012 in words is "six hundred seventy-one billion, seven hundred ninety-six million, five hundred twenty thousand, twelve".