871345332111442 has 4 divisors (see below), whose sum is σ = 1307017998167166. Its totient is φ = 435672666055720.

The previous prime is 871345332111361. The next prime is 871345332111503. The reversal of 871345332111442 is 244111233543178.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 635185613946321 + 236159718165121 = 25202889^2 + 15367489^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 217836333027859 + ... + 217836333027862.

Almost surely, 2^{871345332111442} is an apocalyptic number.

871345332111442 is a deficient number, since it is larger than the sum of its proper divisors (435672666055724).

871345332111442 is a wasteful number, since it uses less digits than its factorization.

871345332111442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435672666055723.

The product of its digits is 1935360, while the sum is 49.

The spelling of 871345332111442 in words is "eight hundred seventy-one trillion, three hundred forty-five billion, three hundred thirty-two million, one hundred eleven thousand, four hundred forty-two".