871105181204681 has 4 divisors (see below), whose sum is σ = 908979319517952. Its totient is φ = 833231042891412.

The previous prime is 871105181204653. The next prime is 871105181204689. The reversal of 871105181204681 is 186402181501178.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 871105181204681 - 2¹⁰ = 871105181203657 is a prime.

It is a super-2 number, since 2×871105181204681² (a number of 31 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (871105181204689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18937069156601 + ... + 18937069156646.

It is an arithmetic number, because the mean of its divisors is an integer number (227244829879488).

Almost surely, 2^{871105181204681} is an apocalyptic number.

It is an amenable number.

871105181204681 is a deficient number, since it is larger than the sum of its proper divisors (37874138313271).

871105181204681 is a wasteful number, since it uses less digits than its factorization.

871105181204681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37874138313270.

The product of its (nonzero) digits is 860160, while the sum is 53.

The spelling of 871105181204681 in words is "eight hundred seventy-one trillion, one hundred five billion, one hundred eighty-one million, two hundred four thousand, six hundred eighty-one".