13244240534513 has 4 divisors (see below), whose sum is σ = 13244251605108. Its totient is φ = 13244229463920.

The previous prime is 13244240534509. The next prime is 13244240534521. The reversal of 13244240534513 is 31543504244231.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 9304622921104 + 3939617613409 = 3050348^2 + 1984847^2 .

It is a cyclic number.

It is not a de Polignac number, because 13244240534513 - 2² = 13244240534509 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13244240534113) 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, 3488498 + ... + 6217563.

It is an arithmetic number, because the mean of its divisors is an integer number (3311062901277).

Almost surely, 2^{13244240534513} is an apocalyptic number.

It is an amenable number.

13244240534513 is a deficient number, since it is larger than the sum of its proper divisors (11070595).

13244240534513 is an equidigital number, since it uses as much as digits as its factorization.

13244240534513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11070594.

The product of its (nonzero) digits is 691200, while the sum is 41.

Adding to 13244240534513 its reverse (31543504244231), we get a palindrome (44787744778744).

The spelling of 13244240534513 in words is "thirteen trillion, two hundred forty-four billion, two hundred forty million, five hundred thirty-four thousand, five hundred thirteen".