871345613278218 has 16 divisors (see below), whose sum is σ = 1876744397830176. Its totient is φ = 268106342547120.

The previous prime is 871345613278193. The next prime is 871345613278267. The reversal of 871345613278218 is 812872316543178.

It is a Curzon number.

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, 5585548802988 + ... + 5585548803143.

It is an arithmetic number, because the mean of its divisors is an integer number (117296524864386).

Almost surely, 2^{871345613278218} is an apocalyptic number.

871345613278218 is an abundant number, since it is smaller than the sum of its proper divisors (1005398784551958).

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

871345613278218 is a wasteful number, since it uses less digits than its factorization.

871345613278218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11171097606149.

The product of its digits is 108380160, while the sum is 66.

The spelling of 871345613278218 in words is "eight hundred seventy-one trillion, three hundred forty-five billion, six hundred thirteen million, two hundred seventy-eight thousand, two hundred eighteen".