11660444451220 has 24 divisors (see below), whose sum is σ = 24490139184000. Its totient is φ = 4663567144992.

The previous prime is 11660444451217. The next prime is 11660444451251. The reversal of 11660444451220 is 2215444406611.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38008120 + ... + 38313679.

It is an arithmetic number, because the mean of its divisors is an integer number (1020422466000).

Almost surely, 2^{11660444451220} is an apocalyptic number.

11660444451220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11660444451220 is an abundant number, since it is smaller than the sum of its proper divisors (12829694732780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11660444451220 is a wasteful number, since it uses less digits than its factorization.

11660444451220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76329447 (or 76329445 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 40.

Adding to 11660444451220 its reverse (2215444406611), we get a palindrome (13875888857831).

The spelling of 11660444451220 in words is "eleven trillion, six hundred sixty billion, four hundred forty-four million, four hundred fifty-one thousand, two hundred twenty".