871656897432 has 32 divisors (see below), whose sum is σ = 2179179175680. Its totient is φ = 290547374880.

The previous prime is 871656897401. The next prime is 871656897439. The reversal of 871656897432 is 234798656178.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (871656897439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1311757 + ... + 1861187.

It is an arithmetic number, because the mean of its divisors is an integer number (68099349240).

Almost surely, 2^871656897432 is an apocalyptic number.

It is an amenable number.

871656897432 is an abundant number, since it is smaller than the sum of its proper divisors (1307522278248).

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

871656897432 is a wasteful number, since it uses less digits than its factorization.

871656897432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 615543 (or 615539 counting only the distinct ones).

The product of its digits is 121927680, while the sum is 66.

The spelling of 871656897432 in words is "eight hundred seventy-one billion, six hundred fifty-six million, eight hundred ninety-seven thousand, four hundred thirty-two".