11123545253 has 4 divisors (see below), whose sum is σ = 11123757708. Its totient is φ = 11123332800.

The previous prime is 11123545249. The next prime is 11123545291. The reversal of 11123545253 is 35254532111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 35254532111 = 129587 ⋅272053.

It can be written as a sum of positive squares in 2 ways, for example, as 5435670529 + 5687874724 = 73727^2 + 75418^2 .

It is a cyclic number.

It is not a de Polignac number, because 11123545253 - 2² = 11123545249 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 (11123542253) 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, 34103 + ... + 153003.

It is an arithmetic number, because the mean of its divisors is an integer number (2780939427).

Almost surely, 2^11123545253 is an apocalyptic number.

It is an amenable number.

11123545253 is a deficient number, since it is larger than the sum of its proper divisors (212455).

11123545253 is an equidigital number, since it uses as much as digits as its factorization.

11123545253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212454.

The product of its digits is 18000, while the sum is 32.

The spelling of 11123545253 in words is "eleven billion, one hundred twenty-three million, five hundred forty-five thousand, two hundred fifty-three".