13518965161396 has 36 divisors (see below), whose sum is σ = 25202904861708. Its totient is φ = 6343843483648.

The previous prime is 13518965161393. The next prime is 13518965161397. The reversal of 13518965161396 is 69316156981531.

It can be written as a sum of positive squares in 6 ways, for example, as 7680068496 + 13511285092900 = 87636^2 + 3675770^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13518965161393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16156531 + ... + 16972666.

It is an arithmetic number, because the mean of its divisors is an integer number (700080690603).

Almost surely, 2^{13518965161396} is an apocalyptic number.

It is an amenable number.

13518965161396 is a deficient number, since it is larger than the sum of its proper divisors (11683939700312).

13518965161396 is a wasteful number, since it uses less digits than its factorization.

13518965161396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33129588 (or 33129569 counting only the distinct ones).

The product of its digits is 31492800, while the sum is 64.

The spelling of 13518965161396 in words is "thirteen trillion, five hundred eighteen billion, nine hundred sixty-five million, one hundred sixty-one thousand, three hundred ninety-six".