11011105000505 has 16 divisors (see below), whose sum is σ = 13263798889344. Its totient is φ = 8775253169280.

The previous prime is 11011105000453. The next prime is 11011105000507. The reversal of 11011105000505 is 50500050111011.

It is a de Polignac number, because none of the positive numbers 2^k-11011105000505 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11011105000507) 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, 3859877 + ... + 6076253.

It is an arithmetic number, because the mean of its divisors is an integer number (828987430584).

Almost surely, 2^{11011105000505} is an apocalyptic number.

It is an amenable number.

11011105000505 is a deficient number, since it is larger than the sum of its proper divisors (2252693888839).

11011105000505 is a wasteful number, since it uses less digits than its factorization.

11011105000505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2220176.

The product of its (nonzero) digits is 125, while the sum is 20.

Adding to 11011105000505 its reverse (50500050111011), we get a palindrome (61511155111516).

The spelling of 11011105000505 in words is "eleven trillion, eleven billion, one hundred five million, five hundred five", and thus it is an aban number.