671285817560 has 32 divisors (see below), whose sum is σ = 1510417571040. Its totient is φ = 268509974784.

The previous prime is 671285817463. The next prime is 671285817571. The reversal of 671285817560 is 65718582176.

It is a junction number, because it is equal to n+sod(n) for n = 671285817496 and 671285817505.

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 7 ways as a sum of consecutive naturals, for example, 3694604 + ... + 3872036.

It is an arithmetic number, because the mean of its divisors is an integer number (47200549095).

Almost surely, 2^671285817560 is an apocalyptic number.

It is an amenable number.

671285817560 is an abundant number, since it is smaller than the sum of its proper divisors (839131753480).

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

671285817560 is a wasteful number, since it uses less digits than its factorization.

671285817560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272027 (or 272023 counting only the distinct ones).

The product of its (nonzero) digits is 5644800, while the sum is 56.

The spelling of 671285817560 in words is "six hundred seventy-one billion, two hundred eighty-five million, eight hundred seventeen thousand, five hundred sixty".