11523243253 has 4 divisors (see below), whose sum is σ = 12129729760. Its totient is φ = 10916756748.

The previous prime is 11523243209. The next prime is 11523243257. The reversal of 11523243253 is 35234232511.

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.

It is a cyclic number.

It is not a de Polignac number, because 11523243253 - 2²¹ = 11521146101 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 (11523243257) 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, 303243225 + ... + 303243262.

It is an arithmetic number, because the mean of its divisors is an integer number (3032432440).

Almost surely, 2^11523243253 is an apocalyptic number.

It is an amenable number.

11523243253 is a deficient number, since it is larger than the sum of its proper divisors (606486507).

11523243253 is an equidigital number, since it uses as much as digits as its factorization.

11523243253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 606486506.

The product of its digits is 21600, while the sum is 31.

Adding to 11523243253 its reverse (35234232511), we get a palindrome (46757475764).

The spelling of 11523243253 in words is "eleven billion, five hundred twenty-three million, two hundred forty-three thousand, two hundred fifty-three".