13135043016613 has 4 divisors (see below), whose sum is σ = 15011477733280. Its totient is φ = 11258608299948.

The previous prime is 13135043016583. The next prime is 13135043016631. The reversal of 13135043016613 is 31661034053131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13135043016613 - 2³³ = 13126453082021 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13135043016673) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 938217358323 + ... + 938217358336.

It is an arithmetic number, because the mean of its divisors is an integer number (3752869433320).

Almost surely, 2^{13135043016613} is an apocalyptic number.

It is an amenable number.

13135043016613 is a deficient number, since it is larger than the sum of its proper divisors (1876434716667).

13135043016613 is an equidigital number, since it uses as much as digits as its factorization.

13135043016613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1876434716666.

The product of its (nonzero) digits is 58320, while the sum is 37.

Adding to 13135043016613 its reverse (31661034053131), we get a palindrome (44796077069744).

The spelling of 13135043016613 in words is "thirteen trillion, one hundred thirty-five billion, forty-three million, sixteen thousand, six hundred thirteen".