11565656066 has 8 divisors (see below), whose sum is σ = 17485086720. Its totient is φ = 5737293828.

The previous prime is 11565656017. The next prime is 11565656077. The reversal of 11565656066 is 66065656511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 11565656066.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22766786 + ... + 22767293.

It is an arithmetic number, because the mean of its divisors is an integer number (2185635840).

Almost surely, 2^11565656066 is an apocalyptic number.

11565656066 is a deficient number, since it is larger than the sum of its proper divisors (5919430654).

11565656066 is a wasteful number, since it uses less digits than its factorization.

11565656066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45534208.

The product of its (nonzero) digits is 972000, while the sum is 47.

The spelling of 11565656066 in words is "eleven billion, five hundred sixty-five million, six hundred fifty-six thousand, sixty-six".