8656958843213 has 2 divisors, whose sum is σ = 8656958843214. Its totient is φ = 8656958843212.

The previous prime is 8656958843201. The next prime is 8656958843359. The reversal of 8656958843213 is 3123488596568.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7326262783849 + 1330696059364 = 2706707^2 + 1153558^2 .

It is a cyclic number.

It is not a de Polignac number, because 8656958843213 - 2¹⁸ = 8656958581069 is a prime.

It is a super-3 number, since 3×8656958843213³ (a number of 40 digits) contains 333 as substring.

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 (8656958843513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4328479421606 + 4328479421607.

It is an arithmetic number, because the mean of its divisors is an integer number (4328479421607).

Almost surely, 2^{8656958843213} is an apocalyptic number.

It is an amenable number.

8656958843213 is a deficient number, since it is larger than the sum of its proper divisors (1).

8656958843213 is an equidigital number, since it uses as much as digits as its factorization.

8656958843213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 298598400, while the sum is 68.

The spelling of 8656958843213 in words is "eight trillion, six hundred fifty-six billion, nine hundred fifty-eight million, eight hundred forty-three thousand, two hundred thirteen".