11660444451223 has 4 divisors (see below), whose sum is σ = 11660452938288. Its totient is φ = 11660435964160.

The previous prime is 11660444451217. The next prime is 11660444451251. The reversal of 11660444451223 is 32215444406611.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11660444451223 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11660444451223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11660444451263) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1657258 + ... + 5105623.

It is an arithmetic number, because the mean of its divisors is an integer number (2915113234572).

Almost surely, 2^{11660444451223} is an apocalyptic number.

11660444451223 is a deficient number, since it is larger than the sum of its proper divisors (8487065).

11660444451223 is an equidigital number, since it uses as much as digits as its factorization.

11660444451223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8487064.

The product of its (nonzero) digits is 552960, while the sum is 43.

Adding to 11660444451223 its reverse (32215444406611), we get a palindrome (43875888857834).

The spelling of 11660444451223 in words is "eleven trillion, six hundred sixty billion, four hundred forty-four million, four hundred fifty-one thousand, two hundred twenty-three".