13561728226 has 8 divisors (see below), whose sum is σ = 20388513744. Its totient is φ = 6765556980.

The previous prime is 13561728221. The next prime is 13561728239. The reversal of 13561728226 is 62282716531.

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

It is not an unprimeable number, because it can be changed into a prime (13561728221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7652460 + ... + 7654231.

It is an arithmetic number, because the mean of its divisors is an integer number (2548564218).

Almost surely, 2^13561728226 is an apocalyptic number.

13561728226 is a deficient number, since it is larger than the sum of its proper divisors (6826785518).

13561728226 is a wasteful number, since it uses less digits than its factorization.

13561728226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15307136.

The product of its digits is 241920, while the sum is 43.

The spelling of 13561728226 in words is "thirteen billion, five hundred sixty-one million, seven hundred twenty-eight thousand, two hundred twenty-six".