13181268253 has 4 divisors (see below), whose sum is σ = 13184274528. Its totient is φ = 13178261980.

The previous prime is 13181268229. The next prime is 13181268281. The reversal of 13181268253 is 35286218131.

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 13181268253 - 2⁹ = 13181267741 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13181268553) 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, 1496551 + ... + 1505332.

It is an arithmetic number, because the mean of its divisors is an integer number (3296068632).

Almost surely, 2^13181268253 is an apocalyptic number.

It is an amenable number.

13181268253 is a deficient number, since it is larger than the sum of its proper divisors (3006275).

13181268253 is an equidigital number, since it uses as much as digits as its factorization.

13181268253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3006274.

The product of its digits is 69120, while the sum is 40.

The spelling of 13181268253 in words is "thirteen billion, one hundred eighty-one million, two hundred sixty-eight thousand, two hundred fifty-three".