11248718909 has 4 divisors (see below), whose sum is σ = 11416610304. Its totient is φ = 11080827516.

The previous prime is 11248718893. The next prime is 11248718917. The reversal of 11248718909 is 90981784211.

It is a happy number.

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 11248718909 - 2⁴ = 11248718893 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 (11248718209) 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, 83945597 + ... + 83945730.

It is an arithmetic number, because the mean of its divisors is an integer number (2854152576).

Almost surely, 2^11248718909 is an apocalyptic number.

It is an amenable number.

11248718909 is a deficient number, since it is larger than the sum of its proper divisors (167891395).

11248718909 is an equidigital number, since it uses as much as digits as its factorization.

11248718909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167891394.

The product of its (nonzero) digits is 290304, while the sum is 50.

The spelling of 11248718909 in words is "eleven billion, two hundred forty-eight million, seven hundred eighteen thousand, nine hundred nine".