13768587515213 has 2 divisors, whose sum is σ = 13768587515214. Its totient is φ = 13768587515212.

The previous prime is 13768587515201. The next prime is 13768587515261. The reversal of 13768587515213 is 31251578586731.

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., 13608853804324 + 159733710889 = 3689018^2 + 399667^2 .

It is a cyclic number.

It is not a de Polignac number, because 13768587515213 - 2⁴ = 13768587515197 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13768587505213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6884293757606 + 6884293757607.

It is an arithmetic number, because the mean of its divisors is an integer number (6884293757607).

Almost surely, 2^{13768587515213} is an apocalyptic number.

It is an amenable number.

13768587515213 is a deficient number, since it is larger than the sum of its proper divisors (1).

13768587515213 is an equidigital number, since it uses as much as digits as its factorization.

13768587515213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 42336000, while the sum is 62.

The spelling of 13768587515213 in words is "thirteen trillion, seven hundred sixty-eight billion, five hundred eighty-seven million, five hundred fifteen thousand, two hundred thirteen".