11272260809 has 4 divisors (see below), whose sum is σ = 11316122004. Its totient is φ = 11228399616.

The previous prime is 11272260761. The next prime is 11272260817. The reversal of 11272260809 is 90806227211.

11272260809 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 90806227211 = 7 ⋅12972318173.

It can be written as a sum of positive squares in 2 ways, for example, as 9692993209 + 1579267600 = 98453^2 + 39740^2 .

It is a cyclic number.

It is not a de Polignac number, because 11272260809 - 2¹² = 11272256713 is a prime.

It is a super-2 number, since 2×11272260809² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11272260829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21930212 + ... + 21930725.

It is an arithmetic number, because the mean of its divisors is an integer number (2829030501).

Almost surely, 2^11272260809 is an apocalyptic number.

It is an amenable number.

11272260809 is a deficient number, since it is larger than the sum of its proper divisors (43861195).

11272260809 is an equidigital number, since it uses as much as digits as its factorization.

11272260809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43861194.

The product of its (nonzero) digits is 24192, while the sum is 38.

The spelling of 11272260809 in words is "eleven billion, two hundred seventy-two million, two hundred sixty thousand, eight hundred nine".