52320526566 has 128 divisors (see below), whose sum is σ = 133352082432. Its totient is φ = 13402540800.

The previous prime is 52320526501. The next prime is 52320526627. The reversal of 52320526566 is 66562502325.

52320526566 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4074436 + ... + 4087256.

It is an arithmetic number, because the mean of its divisors is an integer number (1041813144).

Almost surely, 2^52320526566 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52320526566, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66676041216).

52320526566 is an abundant number, since it is smaller than the sum of its proper divisors (81031555866).

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

52320526566 is a wasteful number, since it uses less digits than its factorization.

52320526566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12939 (or 12917 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 42.

The spelling of 52320526566 in words is "fifty-two billion, three hundred twenty million, five hundred twenty-six thousand, five hundred sixty-six".