11108105865 has 48 divisors (see below), whose sum is σ = 19627845120. Its totient is φ = 5810313600.

The previous prime is 11108105863. The next prime is 11108105873. The reversal of 11108105865 is 56850180111.

It is not a de Polignac number, because 11108105865 - 2¹ = 11108105863 is a prime.

It is a super-3 number, since 3×11108105865³ (a number of 31 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (11108105861) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 526459 + ... + 547151.

It is an arithmetic number, because the mean of its divisors is an integer number (408913440).

Almost surely, 2^11108105865 is an apocalyptic number.

11108105865 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11108105865 is a deficient number, since it is larger than the sum of its proper divisors (8519739255).

11108105865 is a wasteful number, since it uses less digits than its factorization.

11108105865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20934 (or 20931 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 36.

Adding to 11108105865 its reverse (56850180111), we get a palindrome (67958285976).

The spelling of 11108105865 in words is "eleven billion, one hundred eight million, one hundred five thousand, eight hundred sixty-five".