671871019203 has 24 divisors (see below), whose sum is σ = 1028925039168. Its totient is φ = 421009166592.

The previous prime is 671871019091. The next prime is 671871019207. The reversal of 671871019203 is 302910178176.

It is not a de Polignac number, because 671871019203 - 2⁸ = 671871018947 is a prime.

It is not an unprimeable number, because it can be changed into a prime (671871019207) 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, 2784651 + ... + 3016292.

It is an arithmetic number, because the mean of its divisors is an integer number (42871876632).

Almost surely, 2^671871019203 is an apocalyptic number.

671871019203 is a deficient number, since it is larger than the sum of its proper divisors (357054019965).

671871019203 is a wasteful number, since it uses less digits than its factorization.

671871019203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5801723 (or 5801720 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 45.

The spelling of 671871019203 in words is "six hundred seventy-one billion, eight hundred seventy-one million, nineteen thousand, two hundred three".