52559711568 has 400 divisors, whose sum is σ = 187961469696. Its totient is φ = 13807687680.

The previous prime is 52559711557. The next prime is 52559711579. The reversal of 52559711568 is 86511795525.

52559711568 is a `hidden beast` number, since 5 + 2 + 5 + 5 + 9 + 71 + 1 + 568 = 666.

It is an interprime number because it is at equal distance from previous prime (52559711557) and next prime (52559711579).

It is a super-2 number, since 2×52559711568² (a number of 22 digits) contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

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 79 ways as a sum of consecutive naturals, for example, 36677380 + ... + 36678812.

Almost surely, 2^52559711568 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 52559711568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93980734848).

52559711568 is an abundant number, since it is smaller than the sum of its proper divisors (135401758128).

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

52559711568 is a wasteful number, since it uses less digits than its factorization.

52559711568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1784 (or 1769 counting only the distinct ones).

The product of its digits is 3780000, while the sum is 54.

The spelling of 52559711568 in words is "fifty-two billion, five hundred fifty-nine million, seven hundred eleven thousand, five hundred sixty-eight".