11110111065 has 40 divisors (see below), whose sum is σ = 21087439560. Its totient is φ = 5576836608.

The previous prime is 11110111057. The next prime is 11110111081. The reversal of 11110111065 is 56011101111.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 5137448976 + 5972662089 = 71676^2 + 77283^2 .

It is not a de Polignac number, because 11110111065 - 2³ = 11110111057 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 799950 + ... + 813719.

It is an arithmetic number, because the mean of its divisors is an integer number (527185989).

Almost surely, 2^11110111065 is an apocalyptic number.

11110111065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11110111065 is a deficient number, since it is larger than the sum of its proper divisors (9977328495).

11110111065 is a wasteful number, since it uses less digits than its factorization.

11110111065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1613703 (or 1613694 counting only the distinct ones).

The product of its (nonzero) digits is 30, while the sum is 18.

Adding to 11110111065 its reverse (56011101111), we get a palindrome (67121212176).

The spelling of 11110111065 in words is "eleven billion, one hundred ten million, one hundred eleven thousand, sixty-five".