13581600191 has 4 divisors (see below), whose sum is σ = 13598023752. Its totient is φ = 13565176632.

The previous prime is 13581600187. The next prime is 13581600239. The reversal of 13581600191 is 19100618531.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13581600191 - 2² = 13581600187 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 (13581650191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8210540 + ... + 8212193.

It is an arithmetic number, because the mean of its divisors is an integer number (3399505938).

Almost surely, 2^13581600191 is an apocalyptic number.

13581600191 is a deficient number, since it is larger than the sum of its proper divisors (16423561).

13581600191 is an equidigital number, since it uses as much as digits as its factorization.

13581600191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16423560.

The product of its (nonzero) digits is 6480, while the sum is 35.

The spelling of 13581600191 in words is "thirteen billion, five hundred eighty-one million, six hundred thousand, one hundred ninety-one".