13503606434465 has 24 divisors (see below), whose sum is σ = 18850102920000. Its totient is φ = 9259532001888.

The previous prime is 13503606434429. The next prime is 13503606434467. The reversal of 13503606434465 is 56443460630531.

It is not a de Polignac number, because 13503606434465 - 2²⁰ = 13503605385889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13503606434467) 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 23 ways as a sum of consecutive naturals, for example, 40257734 + ... + 40591776.

It is an arithmetic number, because the mean of its divisors is an integer number (785420955000).

Almost surely, 2^{13503606434465} is an apocalyptic number.

It is an amenable number.

13503606434465 is a deficient number, since it is larger than the sum of its proper divisors (5346496485535).

13503606434465 is a wasteful number, since it uses less digits than its factorization.

13503606434465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499061 (or 499054 counting only the distinct ones).

The product of its (nonzero) digits is 9331200, while the sum is 50.

The spelling of 13503606434465 in words is "thirteen trillion, five hundred three billion, six hundred six million, four hundred thirty-four thousand, four hundred sixty-five".