11265184532809 has 4 divisors (see below), whose sum is σ = 11265213110980. Its totient is φ = 11265155954640.

The previous prime is 11265184532779. The next prime is 11265184532837. The reversal of 11265184532809 is 90823548156211.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9000000000000 + 2265184532809 = 3000000^2 + 1505053^2 .

It is a cyclic number.

It is not a de Polignac number, because 11265184532809 - 2²⁷ = 11265050315081 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11265184532809.

It is not an unprimeable number, because it can be changed into a prime (11265184532209) 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, 13689414 + ... + 14488975.

It is an arithmetic number, because the mean of its divisors is an integer number (2816303277745).

Almost surely, 2^{11265184532809} is an apocalyptic number.

It is an amenable number.

11265184532809 is a deficient number, since it is larger than the sum of its proper divisors (28578171).

11265184532809 is an equidigital number, since it uses as much as digits as its factorization.

11265184532809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28578170.

The product of its (nonzero) digits is 4147200, while the sum is 55.

The spelling of 11265184532809 in words is "eleven trillion, two hundred sixty-five billion, one hundred eighty-four million, five hundred thirty-two thousand, eight hundred nine".