856711352871 has 24 divisors (see below), whose sum is σ = 1429379372304. Its totient is φ = 488676706560.

The previous prime is 856711352773. The next prime is 856711352899. The reversal of 856711352871 is 178253117658.

856711352871 is a `hidden beast` number, since 8 + 567 + 1 + 1 + 3 + 5 + 2 + 8 + 71 = 666.

It is not a de Polignac number, because 856711352871 - 2²¹ = 856709255719 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (856711357871) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 254517436 + ... + 254520801.

It is an arithmetic number, because the mean of its divisors is an integer number (59557473846).

Almost surely, 2^856711352871 is an apocalyptic number.

856711352871 is a deficient number, since it is larger than the sum of its proper divisors (572668019433).

856711352871 is a wasteful number, since it uses less digits than its factorization.

856711352871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 509038271 (or 509038268 counting only the distinct ones).

The product of its digits is 2822400, while the sum is 54.

The spelling of 856711352871 in words is "eight hundred fifty-six billion, seven hundred eleven million, three hundred fifty-two thousand, eight hundred seventy-one".