13540435253 has 8 divisors (see below), whose sum is σ = 14256625920. Its totient is φ = 12824598240.

The previous prime is 13540435243. The next prime is 13540435303. The reversal of 13540435253 is 35253404531.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 13540435253 - 2⁶ = 13540435189 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13540435243) 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, 7928 + ... + 164753.

It is an arithmetic number, because the mean of its divisors is an integer number (1782078240).

Almost surely, 2^13540435253 is an apocalyptic number.

It is an amenable number.

13540435253 is a deficient number, since it is larger than the sum of its proper divisors (716190667).

13540435253 is a wasteful number, since it uses less digits than its factorization.

13540435253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176827.

The product of its (nonzero) digits is 108000, while the sum is 35.

Adding to 13540435253 its reverse (35253404531), we get a palindrome (48793839784).

The spelling of 13540435253 in words is "thirteen billion, five hundred forty million, four hundred thirty-five thousand, two hundred fifty-three".