52533512640 has 336 divisors, whose sum is σ = 213170780160. Its totient is φ = 11620177920.

The previous prime is 52533512611. The next prime is 52533512651. The reversal of 52533512640 is 4621533525.

52533512640 is a `hidden beast` number, since 5 + 2 + 5 + 3 + 3 + 5 + 1 + 2 + 640 = 666.

52533512640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (336).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 52533512595 and 52533512604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 582931 + ... + 666989.

Almost surely, 2^52533512640 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 52533512640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106585390080).

52533512640 is an abundant number, since it is smaller than the sum of its proper divisors (160637267520).

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

52533512640 is a wasteful number, since it uses less digits than its factorization.

52533512640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84120 (or 84107 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 36.

The spelling of 52533512640 in words is "fifty-two billion, five hundred thirty-three million, five hundred twelve thousand, six hundred forty".