13540022321 has 8 divisors (see below), whose sum is σ = 15478389504. Its totient is φ = 11602674720.

The previous prime is 13540022311. The next prime is 13540022333. The reversal of 13540022321 is 12322004531.

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

It is not a de Polignac number, because 13540022321 - 2⁶ = 13540022257 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13540022311) 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, 226220 + ... + 279741.

It is an arithmetic number, because the mean of its divisors is an integer number (1934798688).

Almost surely, 2^13540022321 is an apocalyptic number.

It is an amenable number.

13540022321 is a deficient number, since it is larger than the sum of its proper divisors (1938367183).

13540022321 is an equidigital number, since it uses as much as digits as its factorization.

13540022321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509791.

The product of its (nonzero) digits is 1440, while the sum is 23.

Adding to 13540022321 its reverse (12322004531), we get a palindrome (25862026852).

The spelling of 13540022321 in words is "thirteen billion, five hundred forty million, twenty-two thousand, three hundred twenty-one".