13581225579 has 8 divisors (see below), whose sum is σ = 18110094912. Its totient is φ = 9053253320.

The previous prime is 13581225551. The next prime is 13581225617. The reversal of 13581225579 is 97552218531.

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 13581225579 - 2²⁴ = 13564448363 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13581225529) 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, 188109 + ... + 250094.

It is an arithmetic number, because the mean of its divisors is an integer number (2263761864).

Almost surely, 2^13581225579 is an apocalyptic number.

13581225579 is a deficient number, since it is larger than the sum of its proper divisors (4528869333).

13581225579 is a wasteful number, since it uses less digits than its factorization.

13581225579 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448537.

The product of its digits is 756000, while the sum is 48.

The spelling of 13581225579 in words is "thirteen billion, five hundred eighty-one million, two hundred twenty-five thousand, five hundred seventy-nine".