52558781218740 has 192 divisors, whose sum is σ = 167512756320000. Its totient is φ = 13673147811840.

The previous prime is 52558781218667. The next prime is 52558781218753. The reversal of 52558781218740 is 4781218785525.

It is a happy number.

52558781218740 is a `hidden beast` number, since 5 + 2 + 5 + 587 + 8 + 1 + 2 + 1 + 8 + 7 + 40 = 666.

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, 566936911 + ... + 567029609.

It is an arithmetic number, because the mean of its divisors is an integer number (872462272500).

Almost surely, 2^{52558781218740} 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 52558781218740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83756378160000).

52558781218740 is an abundant number, since it is smaller than the sum of its proper divisors (114953975101260).

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

52558781218740 is a wasteful number, since it uses less digits than its factorization.

52558781218740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118367 (or 118359 counting only the distinct ones).

The product of its (nonzero) digits is 50176000, while the sum is 63.

The spelling of 52558781218740 in words is "fifty-two trillion, five hundred fifty-eight billion, seven hundred eighty-one million, two hundred eighteen thousand, seven hundred forty".