11006600081 has 4 divisors (see below), whose sum is σ = 11076705972. Its totient is φ = 10936494192.

The previous prime is 11006600023. The next prime is 11006600089. The reversal of 11006600081 is 18000660011.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1164174400 + 9842425681 = 34120^2 + 99209^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11006600081 is a prime.

It is a super-2 number, since 2×11006600081² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11006600089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35052710 + ... + 35053023.

It is an arithmetic number, because the mean of its divisors is an integer number (2769176493).

Almost surely, 2^11006600081 is an apocalyptic number.

It is an amenable number.

11006600081 is a deficient number, since it is larger than the sum of its proper divisors (70105891).

11006600081 is an equidigital number, since it uses as much as digits as its factorization.

11006600081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70105890.

The product of its (nonzero) digits is 288, while the sum is 23.

The spelling of 11006600081 in words is "eleven billion, six million, six hundred thousand, eighty-one".