13540321244 has 12 divisors (see below), whose sum is σ = 23703279600. Its totient is φ = 6767955648.

The previous prime is 13540321189. The next prime is 13540321297. The reversal of 13540321244 is 44212304531.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 537389 + ... + 562020.

It is an arithmetic number, because the mean of its divisors is an integer number (1975273300).

Almost surely, 2^13540321244 is an apocalyptic number.

It is an amenable number.

13540321244 is a deficient number, since it is larger than the sum of its proper divisors (10162958356).

13540321244 is a wasteful number, since it uses less digits than its factorization.

13540321244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1102492 (or 1102490 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 29.

Adding to 13540321244 its reverse (44212304531), we get a palindrome (57752625775).

The spelling of 13540321244 in words is "thirteen billion, five hundred forty million, three hundred twenty-one thousand, two hundred forty-four".