11155226609 has 4 divisors (see below), whose sum is σ = 11392571904. Its totient is φ = 10917881316.

The previous prime is 11155226603. The next prime is 11155226627. The reversal of 11155226609 is 90662255111.

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 11155226609 - 2¹² = 11155222513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11155226603) 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, 118672577 + ... + 118672670.

It is an arithmetic number, because the mean of its divisors is an integer number (2848142976).

Almost surely, 2^11155226609 is an apocalyptic number.

It is an amenable number.

11155226609 is a deficient number, since it is larger than the sum of its proper divisors (237345295).

11155226609 is an equidigital number, since it uses as much as digits as its factorization.

11155226609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237345294.

The product of its (nonzero) digits is 32400, while the sum is 38.

The spelling of 11155226609 in words is "eleven billion, one hundred fifty-five million, two hundred twenty-six thousand, six hundred nine".