52085575656 has 72 divisors (see below), whose sum is σ = 143416291590. Its totient is φ = 17077150080.

The previous prime is 52085575627. The next prime is 52085575673. The reversal of 52085575656 is 65657558025.

52085575656 is a `hidden beast` number, since 5 + 2 + 0 + 8 + 5 + 575 + 65 + 6 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 8890604100 + 43194971556 = 94290^2 + 207834^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 170706 + ... + 365118.

Almost surely, 2^52085575656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52085575656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71708145795).

52085575656 is an abundant number, since it is smaller than the sum of its proper divisors (91330715934).

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

52085575656 is a wasteful number, since it uses less digits than its factorization.

52085575656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194547 (or 194479 counting only the distinct ones).

The product of its (nonzero) digits is 12600000, while the sum is 54.

The spelling of 52085575656 in words is "fifty-two billion, eighty-five million, five hundred seventy-five thousand, six hundred fifty-six".