11233561009 has 16 divisors (see below), whose sum is σ = 12590798400. Its totient is φ = 9932535360.

The previous prime is 11233560991. The next prime is 11233561021. The reversal of 11233561009 is 90016533211.

It is a happy number.

It is not a de Polignac number, because 11233561009 - 2⁹ = 11233560497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11233561049) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2072587 + ... + 2077999.

It is an arithmetic number, because the mean of its divisors is an integer number (786924900).

Almost surely, 2^11233561009 is an apocalyptic number.

It is an amenable number.

11233561009 is a deficient number, since it is larger than the sum of its proper divisors (1357237391).

11233561009 is a wasteful number, since it uses less digits than its factorization.

11233561009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10560.

The product of its (nonzero) digits is 4860, while the sum is 31.

The spelling of 11233561009 in words is "eleven billion, two hundred thirty-three million, five hundred sixty-one thousand, nine".