11665456544 has 48 divisors (see below), whose sum is σ = 26356309056. Its totient is φ = 4978713600.

The previous prime is 11665456531. The next prime is 11665456589. The reversal of 11665456544 is 44565456611.

11665456544 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54062 + ... + 162029.

It is an arithmetic number, because the mean of its divisors is an integer number (549089772).

Almost surely, 2^11665456544 is an apocalyptic number.

11665456544 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

11665456544 is an abundant number, since it is smaller than the sum of its proper divisors (14690852512).

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

11665456544 is a wasteful number, since it uses less digits than its factorization.

11665456544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216349 (or 216341 counting only the distinct ones).

The product of its digits is 1728000, while the sum is 47.

The spelling of 11665456544 in words is "eleven billion, six hundred sixty-five million, four hundred fifty-six thousand, five hundred forty-four".