671776655996 has 12 divisors (see below), whose sum is σ = 1176686707560. Its totient is φ = 335580453840.

The previous prime is 671776655981. The next prime is 671776656059. The reversal of 671776655996 is 699556677176.

It is a congruent number.

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, 76963631 + ... + 76972358.

It is an arithmetic number, because the mean of its divisors is an integer number (98057225630).

Almost surely, 2^671776655996 is an apocalyptic number.

It is an amenable number.

671776655996 is a deficient number, since it is larger than the sum of its proper divisors (504910051564).

671776655996 is a wasteful number, since it uses less digits than its factorization.

671776655996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153937084 (or 153937082 counting only the distinct ones).

The product of its digits is 900169200, while the sum is 74.

The spelling of 671776655996 in words is "six hundred seventy-one billion, seven hundred seventy-six million, six hundred fifty-five thousand, nine hundred ninety-six".