866952832871 has 4 divisors (see below), whose sum is σ = 917950058352. Its totient is φ = 815955607392.

The previous prime is 866952832861. The next prime is 866952832891. The reversal of 866952832871 is 178238259668.

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

It is a cyclic number.

It is not a de Polignac number, because 866952832871 - 2³⁰ = 865879091047 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 866952832798 and 866952832807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (866952832831) 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, 25498612715 + ... + 25498612748.

It is an arithmetic number, because the mean of its divisors is an integer number (229487514588).

Almost surely, 2^866952832871 is an apocalyptic number.

866952832871 is a deficient number, since it is larger than the sum of its proper divisors (50997225481).

866952832871 is a wasteful number, since it uses less digits than its factorization.

866952832871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50997225480.

The product of its digits is 69672960, while the sum is 65.

The spelling of 866952832871 in words is "eight hundred sixty-six billion, nine hundred fifty-two million, eight hundred thirty-two thousand, eight hundred seventy-one".