13502440120441 has 4 divisors (see below), whose sum is σ = 13628631149712. Its totient is φ = 13376249091172.

The previous prime is 13502440120357. The next prime is 13502440120471. The reversal of 13502440120441 is 14402104420531.

It is a happy number.

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 13502440120441 - 2²¹ = 13502438023289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13502440120471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63095514475 + ... + 63095514688.

It is an arithmetic number, because the mean of its divisors is an integer number (3407157787428).

Almost surely, 2^{13502440120441} is an apocalyptic number.

It is an amenable number.

13502440120441 is a deficient number, since it is larger than the sum of its proper divisors (126191029271).

13502440120441 is a wasteful number, since it uses less digits than its factorization.

13502440120441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126191029270.

The product of its (nonzero) digits is 15360, while the sum is 31.

Adding to 13502440120441 its reverse (14402104420531), we get a palindrome (27904544540972).

The spelling of 13502440120441 in words is "thirteen trillion, five hundred two billion, four hundred forty million, one hundred twenty thousand, four hundred forty-one".