13509984689604 has 36 divisors (see below), whose sum is σ = 36777180545196. Its totient is φ = 4156918365888.

The previous prime is 13509984689569. The next prime is 13509984689657. The reversal of 13509984689604 is 40698648990531.

13509984689604 is a `hidden beast` number, since 1 + 3 + 5 + 0 + 9 + 9 + 8 + 4 + 6 + 8 + 9 + 604 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1712119910400 + 11797864779204 = 1308480^2 + 3434802^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14433743859 + ... + 14433744794.

Almost surely, 2^{13509984689604} is an apocalyptic number.

It is an amenable number.

13509984689604 is an abundant number, since it is smaller than the sum of its proper divisors (23267195855592).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13509984689604 is a wasteful number, since it uses less digits than its factorization.

13509984689604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28867488676 (or 28867488671 counting only the distinct ones).

The product of its (nonzero) digits is 403107840, while the sum is 72.

The spelling of 13509984689604 in words is "thirteen trillion, five hundred nine billion, nine hundred eighty-four million, six hundred eighty-nine thousand, six hundred four".