871505854412 has 24 divisors (see below), whose sum is σ = 1551508635600. Its totient is φ = 428222660096.

The previous prime is 871505854393. The next prime is 871505854423. The reversal of 871505854412 is 214458505178.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78788 + ... + 1322580.

It is an arithmetic number, because the mean of its divisors is an integer number (64646193150).

Almost surely, 2^871505854412 is an apocalyptic number.

It is an amenable number.

871505854412 is a deficient number, since it is larger than the sum of its proper divisors (680002781188).

871505854412 is a wasteful number, since it uses less digits than its factorization.

871505854412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1246825 (or 1246823 counting only the distinct ones).

The product of its (nonzero) digits is 1792000, while the sum is 50.

The spelling of 871505854412 in words is "eight hundred seventy-one billion, five hundred five million, eight hundred fifty-four thousand, four hundred twelve".