11065551011 has 4 divisors (see below), whose sum is σ = 11175111024. Its totient is φ = 10955991000.

The previous prime is 11065550989. The next prime is 11065551019. The reversal of 11065551011 is 11015556011.

11065551011 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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11065551011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11065551019) 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, 54779855 + ... + 54780056.

It is an arithmetic number, because the mean of its divisors is an integer number (2793777756).

Almost surely, 2^11065551011 is an apocalyptic number.

11065551011 is a deficient number, since it is larger than the sum of its proper divisors (109560013).

11065551011 is a wasteful number, since it uses less digits than its factorization.

11065551011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109560012.

The product of its (nonzero) digits is 750, while the sum is 26.

Subtracting from 11065551011 its reverse (11015556011), we obtain a triangular number (49995000 = T₉₉₉₉).

The spelling of 11065551011 in words is "eleven billion, sixty-five million, five hundred fifty-one thousand, eleven".