11055506209 has 16 divisors (see below), whose sum is σ = 12665128320. Its totient is φ = 9552216960.

The previous prime is 11055506207. The next prime is 11055506261. The reversal of 11055506209 is 90260555011.

It is not a de Polignac number, because 11055506209 - 2¹ = 11055506207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11055506201) 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, 99444 + ... + 178885.

It is an arithmetic number, because the mean of its divisors is an integer number (791570520).

Almost surely, 2^11055506209 is an apocalyptic number.

It is an amenable number.

11055506209 is a deficient number, since it is larger than the sum of its proper divisors (1609622111).

11055506209 is a wasteful number, since it uses less digits than its factorization.

11055506209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278520.

The product of its (nonzero) digits is 13500, while the sum is 34.

The spelling of 11055506209 in words is "eleven billion, fifty-five million, five hundred six thousand, two hundred nine".