671082685965648 has 160 divisors (see below), whose sum is σ = 2115286386816000. Its totient is φ = 202011645168000.

The previous prime is 671082685965641. The next prime is 671082685965661. The reversal of 671082685965648 is 846569586280176.

671082685965648 is a `hidden beast` number, since 6 + 7 + 10 + 8 + 2 + 6 + 8 + 596 + 5 + 6 + 4 + 8 = 666.

It is a super-3 number, since 3×671082685965648³ (a number of 45 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671082685965641) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 466901998 + ... + 468337101.

It is an arithmetic number, because the mean of its divisors is an integer number (13220539917600).

Almost surely, 2^{671082685965648} is an apocalyptic number.

It is an amenable number.

671082685965648 is an abundant number, since it is smaller than the sum of its proper divisors (1444203700850352).

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

671082685965648 is a wasteful number, since it uses less digits than its factorization.

671082685965648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 935239278 (or 935239266 counting only the distinct ones).

The product of its (nonzero) digits is 8360755200, while the sum is 81.

The spelling of 671082685965648 in words is "six hundred seventy-one trillion, eighty-two billion, six hundred eighty-five million, nine hundred sixty-five thousand, six hundred forty-eight".