396868131868799 has 2 divisors, whose sum is σ = 396868131868800. Its totient is φ = 396868131868798.

The previous prime is 396868131868693. The next prime is 396868131868801. The reversal of 396868131868799 is 997868131868693.

It is a strong prime.

It is an emirp because it is prime and its reverse (997868131868693) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 396868131868799 - 2¹² = 396868131864703 is a prime.

Together with 396868131868801, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (396838131868799) 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, 198434065934399 + 198434065934400.

It is an arithmetic number, because the mean of its divisors is an integer number (198434065934400).

Almost surely, 2^{396868131868799} is an apocalyptic number.

396868131868799 is a deficient number, since it is larger than the sum of its proper divisors (1).

396868131868799 is an equidigital number, since it uses as much as digits as its factorization.

396868131868799 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40633270272, while the sum is 92.

The spelling of 396868131868799 in words is "three hundred ninety-six trillion, eight hundred sixty-eight billion, one hundred thirty-one million, eight hundred sixty-eight thousand, seven hundred ninety-nine".