52185352018869 has 6 divisors (see below), whose sum is σ = 75378841805046. Its totient is φ = 34790234679240.

The previous prime is 52185352018861. The next prime is 52185352018909. The reversal of 52185352018869 is 96881025358125.

52185352018869 is a `hidden beast` number, since 5 + 2 + 1 + 8 + 535 + 2 + 0 + 18 + 86 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 51506601776100 + 678750242769 = 7176810^2 + 823863^2 .

It is not a de Polignac number, because 52185352018869 - 2³ = 52185352018861 is a prime.

It is a super-2 number, since 2×52185352018869² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52185352018861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2899186223262 + ... + 2899186223279.

It is an arithmetic number, because the mean of its divisors is an integer number (12563140300841).

Almost surely, 2^{52185352018869} is an apocalyptic number.

It is an amenable number.

52185352018869 is a deficient number, since it is larger than the sum of its proper divisors (23193489786177).

52185352018869 is a wasteful number, since it uses less digits than its factorization.

52185352018869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5798372446547 (or 5798372446544 counting only the distinct ones).

The product of its (nonzero) digits is 41472000, while the sum is 63.

The spelling of 52185352018869 in words is "fifty-two trillion, one hundred eighty-five billion, three hundred fifty-two million, eighteen thousand, eight hundred sixty-nine".