52442857566 has 240 divisors, whose sum is σ = 135581336352. Its totient is φ = 15110789760.

The previous prime is 52442857561. The next prime is 52442857591. The reversal of 52442857566 is 66575824425.

52442857566 is a `hidden beast` number, since 5 + 2 + 4 + 4 + 2 + 8 + 575 + 66 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52442857561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 132097680 + ... + 132098076.

Almost surely, 2^52442857566 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52442857566, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67790668176).

52442857566 is an abundant number, since it is smaller than the sum of its proper divisors (83138478786).

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

52442857566 is a wasteful number, since it uses less digits than its factorization.

52442857566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 749 (or 729 counting only the distinct ones).

The product of its digits is 16128000, while the sum is 54.

The spelling of 52442857566 in words is "fifty-two billion, four hundred forty-two million, eight hundred fifty-seven thousand, five hundred sixty-six".