11520666606665 has 16 divisors (see below), whose sum is σ = 14555150366400. Its totient is φ = 8729814952512.

The previous prime is 11520666606623. The next prime is 11520666606667. The reversal of 11520666606665 is 56660666602511.

It is a cyclic number.

It is not a de Polignac number, because 11520666606665 - 2¹⁰ = 11520666605641 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11520666606665.

It is not an unprimeable number, because it can be changed into a prime (11520666606667) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10863155 + ... + 11876424.

It is an arithmetic number, because the mean of its divisors is an integer number (909696897900).

Almost surely, 2^{11520666606665} is an apocalyptic number.

It is an amenable number.

11520666606665 is a deficient number, since it is larger than the sum of its proper divisors (3034483759735).

11520666606665 is a wasteful number, since it uses less digits than its factorization.

11520666606665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22744936.

The product of its (nonzero) digits is 13996800, while the sum is 56.

The spelling of 11520666606665 in words is "eleven trillion, five hundred twenty billion, six hundred sixty-six million, six hundred six thousand, six hundred sixty-five".