13643253313 has 8 divisors (see below), whose sum is σ = 13840409736. Its totient is φ = 13446374400.

The previous prime is 13643253301. The next prime is 13643253329. The reversal of 13643253313 is 31335234631.

It can be written as a sum of positive squares in 4 ways, for example, as 2748695184 + 10894558129 = 52428^2 + 104377^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13643253313 is a prime.

It is a super-2 number, since 2×13643253313² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13643253913) 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, 30693 + ... + 168013.

It is an arithmetic number, because the mean of its divisors is an integer number (1730051217).

Almost surely, 2^13643253313 is an apocalyptic number.

It is an amenable number.

13643253313 is a deficient number, since it is larger than the sum of its proper divisors (197156423).

13643253313 is a wasteful number, since it uses less digits than its factorization.

13643253313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138755.

The product of its digits is 58320, while the sum is 34.

Adding to 13643253313 its reverse (31335234631), we get a palindrome (44978487944).

The spelling of 13643253313 in words is "thirteen billion, six hundred forty-three million, two hundred fifty-three thousand, three hundred thirteen".