13271035561 has 8 divisors (see below), whose sum is σ = 15286323200. Its totient is φ = 11285604288.

The previous prime is 13271035549. The next prime is 13271035633. The reversal of 13271035561 is 16553017231.

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

It is not a de Polignac number, because 13271035561 - 2⁵ = 13271035529 is a prime.

It is a super-2 number, since 2×13271035561² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13271035501) 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, 7463136 + ... + 7464913.

It is an arithmetic number, because the mean of its divisors is an integer number (1910790400).

Almost surely, 2^13271035561 is an apocalyptic number.

It is an amenable number.

13271035561 is a deficient number, since it is larger than the sum of its proper divisors (2015287639).

13271035561 is a wasteful number, since it uses less digits than its factorization.

13271035561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14928183.

The product of its (nonzero) digits is 18900, while the sum is 34.

The spelling of 13271035561 in words is "thirteen billion, two hundred seventy-one million, thirty-five thousand, five hundred sixty-one".