13128835112205 has 128 divisors (see below), whose sum is σ = 24364808294400. Its totient is φ = 5991916621824.

The previous prime is 13128835112203. The next prime is 13128835112219. The reversal of 13128835112205 is 50221153882131.

It is not a de Polignac number, because 13128835112205 - 2¹ = 13128835112203 is a prime.

It is a super-2 number, since 2×13128835112205² (a number of 27 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13128835112203) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 23184574 + ... + 23744096.

It is an arithmetic number, because the mean of its divisors is an integer number (190350064800).

Almost surely, 2^{13128835112205} is an apocalyptic number.

13128835112205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13128835112205 is a deficient number, since it is larger than the sum of its proper divisors (11235973182195).

13128835112205 is a wasteful number, since it uses less digits than its factorization.

13128835112205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 559763.

The product of its (nonzero) digits is 115200, while the sum is 42.

Adding to 13128835112205 its reverse (50221153882131), we get a palindrome (63349988994336).

The spelling of 13128835112205 in words is "thirteen trillion, one hundred twenty-eight billion, eight hundred thirty-five million, one hundred twelve thousand, two hundred five".