13665579453 has 12 divisors (see below), whose sum is σ = 19758182080. Its totient is φ = 9101611656.

The previous prime is 13665579443. The next prime is 13665579457. The reversal of 13665579453 is 35497556631.

13665579453 is a `hidden beast` number, since 1 + 3 + 6 + 65 + 579 + 4 + 5 + 3 = 666.

13665579453 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13665579453 - 2²⁰ = 13664530877 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13665579453.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13665579457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 721351 + ... + 740052.

Almost surely, 2^13665579453 is an apocalyptic number.

It is an amenable number.

13665579453 is a deficient number, since it is larger than the sum of its proper divisors (6092602627).

13665579453 is a wasteful number, since it uses less digits than its factorization.

13665579453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1462448 (or 1462445 counting only the distinct ones).

The product of its digits is 10206000, while the sum is 54.

The spelling of 13665579453 in words is "thirteen billion, six hundred sixty-five million, five hundred seventy-nine thousand, four hundred fifty-three".