11662641353213 has 2 divisors, whose sum is σ = 11662641353214. Its totient is φ = 11662641353212.

The previous prime is 11662641353201. The next prime is 11662641353239. The reversal of 11662641353213 is 31235314626611.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11473957106329 + 188684246884 = 3387323^2 + 434378^2 .

It is an emirp because it is prime and its reverse (31235314626611) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11662641353213 - 2¹⁰ = 11662641352189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11662641353113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5831320676606 + 5831320676607.

It is an arithmetic number, because the mean of its divisors is an integer number (5831320676607).

Almost surely, 2^{11662641353213} is an apocalyptic number.

It is an amenable number.

11662641353213 is a deficient number, since it is larger than the sum of its proper divisors (1).

11662641353213 is an equidigital number, since it uses as much as digits as its factorization.

11662641353213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 466560, while the sum is 44.

Adding to 11662641353213 its reverse (31235314626611), we get a palindrome (42897955979824).

The spelling of 11662641353213 in words is "eleven trillion, six hundred sixty-two billion, six hundred forty-one million, three hundred fifty-three thousand, two hundred thirteen".