13135442113 has 8 divisors (see below), whose sum is σ = 13629534632. Its totient is φ = 12648669696.

The previous prime is 13135442081. The next prime is 13135442123. The reversal of 13135442113 is 31124453131.

It can be written as a sum of positive squares in 4 ways, for example, as 634636864 + 12500805249 = 25192^2 + 111807^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 13135442113 - 2⁵ = 13135442081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13135442123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1826370 + ... + 1833547.

It is an arithmetic number, because the mean of its divisors is an integer number (1703691829).

Almost surely, 2^13135442113 is an apocalyptic number.

It is an amenable number.

13135442113 is a deficient number, since it is larger than the sum of its proper divisors (494092519).

13135442113 is an equidigital number, since it uses as much as digits as its factorization.

13135442113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3660051.

The product of its digits is 4320, while the sum is 28.

Adding to 13135442113 its reverse (31124453131), we get a palindrome (44259895244).

The spelling of 13135442113 in words is "thirteen billion, one hundred thirty-five million, four hundred forty-two thousand, one hundred thirteen".