13454323561 has 4 divisors (see below), whose sum is σ = 15376369792. Its totient is φ = 11532277332.

The previous prime is 13454323523. The next prime is 13454323577. The reversal of 13454323561 is 16532345431.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13454323561 - 2¹¹ = 13454321513 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13454323561.

It is not an unprimeable number, because it can be changed into a prime (13454323511) 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, 961023105 + ... + 961023118.

It is an arithmetic number, because the mean of its divisors is an integer number (3844092448).

Almost surely, 2^13454323561 is an apocalyptic number.

It is an amenable number.

13454323561 is a deficient number, since it is larger than the sum of its proper divisors (1922046231).

13454323561 is an equidigital number, since it uses as much as digits as its factorization.

13454323561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1922046230.

The product of its digits is 129600, while the sum is 37.

Adding to 13454323561 its reverse (16532345431), we get a palindrome (29986668992).

The spelling of 13454323561 in words is "thirteen billion, four hundred fifty-four million, three hundred twenty-three thousand, five hundred sixty-one".