671807626893171 has 24 divisors (see below), whose sum is σ = 971218708162560. Its totient is φ = 447488723790576.

The previous prime is 671807626893061. The next prime is 671807626893191. The reversal of 671807626893171 is 171398626708176.

671807626893171 is a `hidden beast` number, since 6 + 7 + 180 + 76 + 2 + 68 + 9 + 317 + 1 = 666.

It is not a de Polignac number, because 671807626893171 - 2⁷ = 671807626893043 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 671807626893171.

It is not an unprimeable number, because it can be changed into a prime (671807626893191) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 939308526 + ... + 940023468.

It is an arithmetic number, because the mean of its divisors is an integer number (40467446173440).

Almost surely, 2^{671807626893171} is an apocalyptic number.

671807626893171 is a deficient number, since it is larger than the sum of its proper divisors (299411081269389).

671807626893171 is a wasteful number, since it uses less digits than its factorization.

671807626893171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 804095 (or 804092 counting only the distinct ones).

The product of its (nonzero) digits is 256048128, while the sum is 72.

The spelling of 671807626893171 in words is "six hundred seventy-one trillion, eight hundred seven billion, six hundred twenty-six million, eight hundred ninety-three thousand, one hundred seventy-one".