52172625018218 has 4 divisors (see below), whose sum is σ = 78258937527330. Its totient is φ = 26086312509108.

The previous prime is 52172625018209. The next prime is 52172625018221. The reversal of 52172625018218 is 81281052627125.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 46111392748369 + 6061232269849 = 6790537^2 + 2461957^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 13043156254553 + ... + 13043156254556.

Almost surely, 2^{52172625018218} is an apocalyptic number.

52172625018218 is a deficient number, since it is larger than the sum of its proper divisors (26086312509112).

52172625018218 is a wasteful number, since it uses less digits than its factorization.

52172625018218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26086312509111.

The product of its (nonzero) digits is 1075200, while the sum is 50.

The spelling of 52172625018218 in words is "fifty-two trillion, one hundred seventy-two billion, six hundred twenty-five million, eighteen thousand, two hundred eighteen".