13135316621 has 8 divisors (see below), whose sum is σ = 15496041984. Its totient is φ = 10895654160.

The previous prime is 13135316573. The next prime is 13135316633. The reversal of 13135316621 is 12661353131.

13135316621 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.

It is a cyclic number.

It is not a de Polignac number, because 13135316621 - 2¹⁰ = 13135315597 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13135316651) 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 7 ways as a sum of consecutive naturals, for example, 30265490 + ... + 30265923.

It is an arithmetic number, because the mean of its divisors is an integer number (1937005248).

Almost surely, 2^13135316621 is an apocalyptic number.

It is an amenable number.

13135316621 is a deficient number, since it is larger than the sum of its proper divisors (2360725363).

13135316621 is an equidigital number, since it uses as much as digits as its factorization.

13135316621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60531451.

The product of its digits is 9720, while the sum is 32.

Adding to 13135316621 its reverse (12661353131), we get a palindrome (25796669752).

The spelling of 13135316621 in words is "thirteen billion, one hundred thirty-five million, three hundred sixteen thousand, six hundred twenty-one".