13131644263 has 4 divisors (see below), whose sum is σ = 13158389448. Its totient is φ = 13104899080.

The previous prime is 13131644261. The next prime is 13131644293. The reversal of 13131644263 is 36244613131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13131644263 - 2¹ = 13131644261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13131644261) 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, 13371856 + ... + 13372837.

It is an arithmetic number, because the mean of its divisors is an integer number (3289597362).

Almost surely, 2^13131644263 is an apocalyptic number.

13131644263 is a deficient number, since it is larger than the sum of its proper divisors (26745185).

13131644263 is an equidigital number, since it uses as much as digits as its factorization.

13131644263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26745184.

The product of its digits is 31104, while the sum is 34.

The spelling of 13131644263 in words is "thirteen billion, one hundred thirty-one million, six hundred forty-four thousand, two hundred sixty-three".