396868131868693 has 2 divisors, whose sum is σ = 396868131868694. Its totient is φ = 396868131868692.

The previous prime is 396868131868633. The next prime is 396868131868799.

396868131868693 is nontrivially palindromic in base 10.

It is the 8132939-th star number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 373751046700164 + 23117085168529 = 19332642^2 + 4808023^2 .

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 396868131868693 - 2¹⁷ = 396868131737621 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 396868131868693.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (396868131868613) by changing a digit.

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 as a sum of consecutive naturals, namely, 198434065934346 + 198434065934347.

It is an arithmetic number, because the mean of its divisors is an integer number (198434065934347).

Almost surely, 2^{396868131868693} is an apocalyptic number.

It is an amenable number.

396868131868693 is a deficient number, since it is larger than the sum of its proper divisors (1).

396868131868693 is an equidigital number, since it uses as much as digits as its factorization.

396868131868693 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11609505792, while the sum is 85.

The spelling of 396868131868693 in words is "three hundred ninety-six trillion, eight hundred sixty-eight billion, one hundred thirty-one million, eight hundred sixty-eight thousand, six hundred ninety-three".