52015993920 has 336 divisors, whose sum is σ = 197201991168. Its totient is φ = 12479201280.

The previous prime is 52015993907. The next prime is 52015993921. The reversal of 52015993920 is 2939951025.

52015993920 is a `hidden beast` number, since 5 + 2 + 0 + 1 + 599 + 39 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (52015993921) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3064497 + ... + 3081423.

It is an arithmetic number, because the mean of its divisors is an integer number (586910688).

Almost surely, 2^52015993920 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 52015993920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98600995584).

52015993920 is an abundant number, since it is smaller than the sum of its proper divisors (145185997248).

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

52015993920 is a wasteful number, since it uses less digits than its factorization.

52015993920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17058 (or 17045 counting only the distinct ones).

The product of its (nonzero) digits is 218700, while the sum is 45.

The spelling of 52015993920 in words is "fifty-two billion, fifteen million, nine hundred ninety-three thousand, nine hundred twenty".