13244923261439 has 4 divisors (see below), whose sum is σ = 13245302123256. Its totient is φ = 13244544399624.

The previous prime is 13244923261421. The next prime is 13244923261447. The reversal of 13244923261439 is 93416232944231.

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 13244923261439 - 2³⁶ = 13176203784703 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 (13244923266439) 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, 189378464 + ... + 189448389.

It is an arithmetic number, because the mean of its divisors is an integer number (3311325530814).

Almost surely, 2^{13244923261439} is an apocalyptic number.

13244923261439 is a deficient number, since it is larger than the sum of its proper divisors (378861817).

13244923261439 is an equidigital number, since it uses as much as digits as its factorization.

13244923261439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378861816.

The product of its digits is 6718464, while the sum is 53.

The spelling of 13244923261439 in words is "thirteen trillion, two hundred forty-four billion, nine hundred twenty-three million, two hundred sixty-one thousand, four hundred thirty-nine".