671320414456 has 16 divisors (see below), whose sum is σ = 1279360626840. Its totient is φ = 330157580640.

The previous prime is 671320414439. The next prime is 671320414459. The reversal of 671320414456 is 654414023176.

It is a super-2 number, since 2×671320414456² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671320414459) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 687827806 + ... + 687828781.

Almost surely, 2^671320414456 is an apocalyptic number.

It is an amenable number.

671320414456 is a deficient number, since it is larger than the sum of its proper divisors (608040212384).

671320414456 is a wasteful number, since it uses less digits than its factorization.

671320414456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1375656654 (or 1375656650 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 43.

The spelling of 671320414456 in words is "six hundred seventy-one billion, three hundred twenty million, four hundred fourteen thousand, four hundred fifty-six".