52511220330156 has 192 divisors, whose sum is σ = 156837789696000. Its totient is φ = 14882803645248.

The previous prime is 52511220330137. The next prime is 52511220330199. The reversal of 52511220330156 is 65103302211525.

52511220330156 is a `hidden beast` number, since 5 + 2 + 51 + 1 + 220 + 330 + 1 + 56 = 666.

52511220330156 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a self number, because there is not a number n which added to its sum of digits gives 52511220330156.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 690000195 + ... + 690076293.

It is an arithmetic number, because the mean of its divisors is an integer number (816863488000).

Almost surely, 2^{52511220330156} 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 52511220330156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78418894848000).

52511220330156 is an abundant number, since it is smaller than the sum of its proper divisors (104326569365844).

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

52511220330156 is a wasteful number, since it uses less digits than its factorization.

52511220330156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83433 (or 83425 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 36.

The spelling of 52511220330156 in words is "fifty-two trillion, five hundred eleven billion, two hundred twenty million, three hundred thirty thousand, one hundred fifty-six".