13244240534521 has 2 divisors, whose sum is σ = 13244240534522. Its totient is φ = 13244240534520.

The previous prime is 13244240534509. The next prime is 13244240534527. The reversal of 13244240534521 is 12543504244231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6904097829225 + 6340142705296 = 2627565^2 + 2517964^2 .

It is an emirp because it is prime and its reverse (12543504244231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13244240534521 - 2²⁵ = 13244206980089 is a prime.

It is not a weakly prime, because it can be changed into another prime (13244240534527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6622120267260 + 6622120267261.

It is an arithmetic number, because the mean of its divisors is an integer number (6622120267261).

Almost surely, 2^{13244240534521} is an apocalyptic number.

It is an amenable number.

13244240534521 is a deficient number, since it is larger than the sum of its proper divisors (1).

13244240534521 is an equidigital number, since it uses as much as digits as its factorization.

13244240534521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 460800, while the sum is 40.

Adding to 13244240534521 its reverse (12543504244231), we get a palindrome (25787744778752).

The spelling of 13244240534521 in words is "thirteen trillion, two hundred forty-four billion, two hundred forty million, five hundred thirty-four thousand, five hundred twenty-one".