11665110655 has 32 divisors (see below), whose sum is σ = 15921930240. Its totient is φ = 8126536320.

The previous prime is 11665110637. The next prime is 11665110661. The reversal of 11665110655 is 55601156611.

It is not a de Polignac number, because 11665110655 - 2¹¹ = 11665108607 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 173772 + ... + 231358.

It is an arithmetic number, because the mean of its divisors is an integer number (497560320).

Almost surely, 2^11665110655 is an apocalyptic number.

11665110655 is a deficient number, since it is larger than the sum of its proper divisors (4256819585).

11665110655 is a wasteful number, since it uses less digits than its factorization.

11665110655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57759.

The product of its (nonzero) digits is 27000, while the sum is 37.

The spelling of 11665110655 in words is "eleven billion, six hundred sixty-five million, one hundred ten thousand, six hundred fifty-five".