11665106110561 has 8 divisors (see below), whose sum is σ = 11756527472448. Its totient is φ = 11573720730000.

The previous prime is 11665106110549. The next prime is 11665106110571. The reversal of 11665106110561 is 16501160156611.

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

It is a cyclic number.

It is not a de Polignac number, because 11665106110561 - 2⁷ = 11665106110433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11665106110571) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8344210 + ... + 9641371.

It is an arithmetic number, because the mean of its divisors is an integer number (1469565934056).

Almost surely, 2^{11665106110561} is an apocalyptic number.

It is an amenable number.

11665106110561 is a deficient number, since it is larger than the sum of its proper divisors (91421361887).

11665106110561 is a wasteful number, since it uses less digits than its factorization.

11665106110561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17990663.

The product of its (nonzero) digits is 32400, while the sum is 40.

The spelling of 11665106110561 in words is "eleven trillion, six hundred sixty-five billion, one hundred six million, one hundred ten thousand, five hundred sixty-one".