11005511005 has 8 divisors (see below), whose sum is σ = 13244027832. Its totient is φ = 8779465728.

The previous prime is 11005510969. The next prime is 11005511057. The reversal of 11005511005 is 50011550011.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 274830084 + 10730680921 = 16578^2 + 103589^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11005511005 - 2⁹ = 11005510493 is a prime.

It is a super-2 number, since 2×11005511005² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3115944 + ... + 3119473.

It is an arithmetic number, because the mean of its divisors is an integer number (1655503479).

Almost surely, 2^11005511005 is an apocalyptic number.

It is an amenable number.

11005511005 is a deficient number, since it is larger than the sum of its proper divisors (2238516827).

11005511005 is an equidigital number, since it uses as much as digits as its factorization.

11005511005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6235775.

The product of its (nonzero) digits is 125, while the sum is 19.

The spelling of 11005511005 in words is "eleven billion, five million, five hundred eleven thousand, five".