13609511424 has 120 divisors (see below), whose sum is σ = 40986028512. Its totient is φ = 4339230720.

The previous prime is 13609511417. The next prime is 13609511477. The reversal of 13609511424 is 42411590631.

It is a happy number.

13609511424 is a `hidden beast` number, since 1 + 3 + 609 + 5 + 1 + 1 + 42 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (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, 41779 + ... + 170189.

Almost surely, 2^13609511424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13609511424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20493014256).

13609511424 is an abundant number, since it is smaller than the sum of its proper divisors (27376517088).

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

13609511424 is a wasteful number, since it uses less digits than its factorization.

13609511424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128458 (or 128439 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The spelling of 13609511424 in words is "thirteen billion, six hundred nine million, five hundred eleven thousand, four hundred twenty-four".