52115752116 has 18 divisors (see below), whose sum is σ = 131737040162. Its totient is φ = 17371917360.

The previous prime is 52115752103. The next prime is 52115752151. The reversal of 52115752116 is 61125751125.

52115752116 is a `hidden beast` number, since 5 + 2 + 115 + 7 + 521 + 16 = 666.

It can be written as a sum of positive squares in only one way, i.e., 48842768016 + 3272984100 = 221004^2 + 57210^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 1447659781 = 52115752116 / (5 + 2 + 1 + 1 + 5 + 7 + 5 + 2 + 1 + 1 + 6).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 723829855 + ... + 723829926.

Almost surely, 2^52115752116 is an apocalyptic number.

It is an amenable number.

52115752116 is an abundant number, since it is smaller than the sum of its proper divisors (79621288046).

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

52115752116 is a wasteful number, since it uses less digits than its factorization.

52115752116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1447659791 (or 1447659786 counting only the distinct ones).

The product of its digits is 21000, while the sum is 36.

Subtracting 52115752116 from its reverse (61125751125), we obtain a palindrome (9009999009).

The spelling of 52115752116 in words is "fifty-two billion, one hundred fifteen million, seven hundred fifty-two thousand, one hundred sixteen".