13205135238 has 8 divisors (see below), whose sum is σ = 26410270488. Its totient is φ = 4401711744.

The previous prime is 13205135231. The next prime is 13205135249. The reversal of 13205135238 is 83253150231.

13205135238 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

13205135238 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 13205135199 and 13205135208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13205135231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1100427931 + ... + 1100427942.

It is an arithmetic number, because the mean of its divisors is an integer number (3301283811).

Almost surely, 2^13205135238 is an apocalyptic number.

13205135238 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

13205135238 is a wasteful number, since it uses less digits than its factorization.

13205135238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2200855878.

The product of its (nonzero) digits is 21600, while the sum is 33.

Adding to 13205135238 its reverse (83253150231), we get a palindrome (96458285469).

The spelling of 13205135238 in words is "thirteen billion, two hundred five million, one hundred thirty-five thousand, two hundred thirty-eight".