13541454321 has 4 divisors (see below), whose sum is σ = 18055272432. Its totient is φ = 9027636212.

The previous prime is 13541454319. The next prime is 13541454373. The reversal of 13541454321 is 12345414531.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12345414531 = 3 ⋅4115138177.

It is a cyclic number.

It is not a de Polignac number, because 13541454321 - 2¹ = 13541454319 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13541454301) 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, 2256909051 + ... + 2256909056.

It is an arithmetic number, because the mean of its divisors is an integer number (4513818108).

Almost surely, 2^13541454321 is an apocalyptic number.

It is an amenable number.

13541454321 is a deficient number, since it is larger than the sum of its proper divisors (4513818111).

13541454321 is an equidigital number, since it uses as much as digits as its factorization.

13541454321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4513818110.

The product of its digits is 28800, while the sum is 33.

Adding to 13541454321 its reverse (12345414531), we get a palindrome (25886868852).

The spelling of 13541454321 in words is "thirteen billion, five hundred forty-one million, four hundred fifty-four thousand, three hundred twenty-one".