11520666604213 has 6 divisors (see below), whose sum is σ = 12475041352674. Its totient is φ = 10634461480656.

The previous prime is 11520666604151. The next prime is 11520666604241. The reversal of 11520666604213 is 31240666602511.

It can be written as a sum of positive squares in 3 ways, for example, as 624316478769 + 10896350125444 = 790137^2 + 3300962^2 .

It is not a de Polignac number, because 11520666604213 - 2³⁷ = 11383227650741 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 11520666604213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11520666904213) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 34084812270 + ... + 34084812607.

It is an arithmetic number, because the mean of its divisors is an integer number (2079173558779).

Almost surely, 2^{11520666604213} is an apocalyptic number.

11520666604213 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

11520666604213 is a deficient number, since it is larger than the sum of its proper divisors (954374748461).

11520666604213 is an equidigital number, since it uses as much as digits as its factorization.

11520666604213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68169624903 (or 68169624890 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 43.

The spelling of 11520666604213 in words is "eleven trillion, five hundred twenty billion, six hundred sixty-six million, six hundred four thousand, two hundred thirteen".