11143404253 has 4 divisors (see below), whose sum is σ = 11143615648. Its totient is φ = 11143192860.

The previous prime is 11143404247. The next prime is 11143404257. The reversal of 11143404253 is 35240434111.

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 a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 11143404253 - 2²¹ = 11141307101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11143404257) 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, 44848 + ... + 155878.

It is an arithmetic number, because the mean of its divisors is an integer number (2785903912).

Almost surely, 2^11143404253 is an apocalyptic number.

It is an amenable number.

11143404253 is a deficient number, since it is larger than the sum of its proper divisors (211395).

11143404253 is a wasteful number, since it uses less digits than its factorization.

11143404253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211394.

The product of its (nonzero) digits is 5760, while the sum is 28.

Adding to 11143404253 its reverse (35240434111), we get a palindrome (46383838364).

The spelling of 11143404253 in words is "eleven billion, one hundred forty-three million, four hundred four thousand, two hundred fifty-three".