856324779471 has 64 divisors (see below), whose sum is σ = 1486235520000. Its totient is φ = 477068659200.

The previous prime is 856324779469. The next prime is 856324779487. The reversal of 856324779471 is 174977423658.

856324779471 is a `hidden beast` number, since 8 + 5 + 6 + 3 + 2 + 477 + 94 + 71 = 666.

It is not a de Polignac number, because 856324779471 - 2¹ = 856324779469 is a prime.

It is a super-3 number, since 3×856324779471³ (a number of 37 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a junction number, because it is equal to n+sod(n) for n = 856324779399 and 856324779408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (856324779461) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 11578891 + ... + 11652611.

It is an arithmetic number, because the mean of its divisors is an integer number (23222430000).

Almost surely, 2^856324779471 is an apocalyptic number.

856324779471 is a deficient number, since it is larger than the sum of its proper divisors (629910740529).

856324779471 is a wasteful number, since it uses less digits than its factorization.

856324779471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75277 (or 75271 counting only the distinct ones).

The product of its digits is 71124480, while the sum is 63.

The spelling of 856324779471 in words is "eight hundred fifty-six billion, three hundred twenty-four million, seven hundred seventy-nine thousand, four hundred seventy-one".