871345332110111 has 4 divisors (see below), whose sum is σ = 922600939881312. Its totient is φ = 820089724338912.

The previous prime is 871345332110051. The next prime is 871345332110131. The reversal of 871345332110111 is 111011233543178.

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

It is a de Polignac number, because none of the positive numbers 2^k-871345332110111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (871345332110131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25627803885575 + ... + 25627803885608.

It is an arithmetic number, because the mean of its divisors is an integer number (230650234970328).

Almost surely, 2^{871345332110111} is an apocalyptic number.

871345332110111 is a deficient number, since it is larger than the sum of its proper divisors (51255607771201).

871345332110111 is a wasteful number, since it uses less digits than its factorization.

871345332110111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51255607771200.

The product of its (nonzero) digits is 60480, while the sum is 41.

Adding to 871345332110111 its reverse (111011233543178), we get a palindrome (982356565653289).

The spelling of 871345332110111 in words is "eight hundred seventy-one trillion, three hundred forty-five billion, three hundred thirty-two million, one hundred ten thousand, one hundred eleven".