13509645359 has 8 divisors (see below), whose sum is σ = 15440314368. Its totient is φ = 11579156280.

The previous prime is 13509645349. The next prime is 13509645367. The reversal of 13509645359 is 95354690531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13509645359 - 2⁴ = 13509645343 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13509645329) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 219974 + ... + 274604.

It is an arithmetic number, because the mean of its divisors is an integer number (1930039296).

Almost surely, 2^13509645359 is an apocalyptic number.

13509645359 is a deficient number, since it is larger than the sum of its proper divisors (1930669009).

13509645359 is an equidigital number, since it uses as much as digits as its factorization.

13509645359 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89965.

The product of its (nonzero) digits is 2187000, while the sum is 50.

The spelling of 13509645359 in words is "thirteen billion, five hundred nine million, six hundred forty-five thousand, three hundred fifty-nine".