11310040665 has 64 divisors (see below), whose sum is σ = 25068165120. Its totient is φ = 4700272320.

The previous prime is 11310040627. The next prime is 11310040801. The reversal of 11310040665 is 56604001311.

It is not a de Polignac number, because 11310040665 - 2⁸ = 11310040409 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 533619 + ... + 554408.

It is an arithmetic number, because the mean of its divisors is an integer number (391690080).

Almost surely, 2^11310040665 is an apocalyptic number.

11310040665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11310040665 is an abundant number, since it is smaller than the sum of its proper divisors (13758124455).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11310040665 is a wasteful number, since it uses less digits than its factorization.

11310040665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1088059 (or 1088053 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

Adding to 11310040665 its reverse (56604001311), we get a palindrome (67914041976).

The spelling of 11310040665 in words is "eleven billion, three hundred ten million, forty thousand, six hundred sixty-five".