871555644132 has 48 divisors (see below), whose sum is σ = 2069372239872. Its totient is φ = 285435136800.

The previous prime is 871555644121. The next prime is 871555644257. The reversal of 871555644132 is 231446555178.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1107244 + ... + 1723107.

It is an arithmetic number, because the mean of its divisors is an integer number (43111921664).

Almost surely, 2^871555644132 is an apocalyptic number.

It is an amenable number.

871555644132 is an abundant number, since it is smaller than the sum of its proper divisors (1197816595740).

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

871555644132 is a wasteful number, since it uses less digits than its factorization.

871555644132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2830808 (or 2830806 counting only the distinct ones).

The product of its digits is 4032000, while the sum is 51.

The spelling of 871555644132 in words is "eight hundred seventy-one billion, five hundred fifty-five million, six hundred forty-four thousand, one hundred thirty-two".