13221596959 has 8 divisors (see below), whose sum is σ = 13320963360. Its totient is φ = 13122272256.

The previous prime is 13221596953. The next prime is 13221596977. The reversal of 13221596959 is 95969512231.

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 13221596959 - 2⁷ = 13221596831 is a prime.

It is a super-2 number, since 2×13221596959² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13221596953) 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, 963007 + ... + 976639.

It is an arithmetic number, because the mean of its divisors is an integer number (1665120420).

Almost surely, 2^13221596959 is an apocalyptic number.

13221596959 is a deficient number, since it is larger than the sum of its proper divisors (99366401).

13221596959 is a wasteful number, since it uses less digits than its factorization.

13221596959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20849.

The product of its digits is 1312200, while the sum is 52.

The spelling of 13221596959 in words is "thirteen billion, two hundred twenty-one million, five hundred ninety-six thousand, nine hundred fifty-nine".