870009856056 has 192 divisors, whose sum is σ = 2799076176000. Its totient is φ = 241150936320.

The previous prime is 870009856039. The next prime is 870009856057. The reversal of 870009856056 is 650658900078.

870009856056 is a `hidden beast` number, since 8 + 70 + 0 + 0 + 9 + 8 + 560 + 5 + 6 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 870009855993 and 870009856011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (870009856057) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 560430 + ... + 1433213.

It is an arithmetic number, because the mean of its divisors is an integer number (14578521750).

Almost surely, 2^870009856056 is an apocalyptic number.

It is an amenable number.

870009856056 is an abundant number, since it is smaller than the sum of its proper divisors (1929066319944).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

870009856056 is a wasteful number, since it uses less digits than its factorization.

870009856056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1993714 (or 1993707 counting only the distinct ones).

The product of its (nonzero) digits is 3628800, while the sum is 54.

The spelling of 870009856056 in words is "eight hundred seventy billion, nine million, eight hundred fifty-six thousand, fifty-six".