13565320704 has 120 divisors (see below), whose sum is σ = 42162192072. Its totient is φ = 4173926400.

The previous prime is 13565320679. The next prime is 13565320709. The reversal of 13565320704 is 40702356531.

13565320704 is a `hidden beast` number, since 1 + 3 + 56 + 532 + 0 + 70 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13565320709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 53322 + ... + 173129.

Almost surely, 2^13565320704 is an apocalyptic number.

It is an amenable number.

13565320704 is an abundant number, since it is smaller than the sum of its proper divisors (28596871368).

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

13565320704 is a wasteful number, since it uses less digits than its factorization.

13565320704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226488 (or 226469 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 36.

The spelling of 13565320704 in words is "thirteen billion, five hundred sixty-five million, three hundred twenty thousand, seven hundred four".