6338666105857 has 2 divisors, whose sum is σ = 6338666105858. Its totient is φ = 6338666105856.

The previous prime is 6338666105839. The next prime is 6338666105861. The reversal of 6338666105857 is 7585016668336.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6321080958976 + 17585146881 = 2514176^2 + 132609^2 .

It is a cyclic number.

It is not a de Polignac number, because 6338666105857 - 2¹⁹ = 6338665581569 is a prime.

It is not a weakly prime, because it can be changed into another prime (6338666105867) 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, 3169333052928 + 3169333052929.

It is an arithmetic number, because the mean of its divisors is an integer number (3169333052929).

Almost surely, 2^{6338666105857} is an apocalyptic number.

It is an amenable number.

6338666105857 is a deficient number, since it is larger than the sum of its proper divisors (1).

6338666105857 is an equidigital number, since it uses as much as digits as its factorization.

6338666105857 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 130636800, while the sum is 64.

The spelling of 6338666105857 in words is "six trillion, three hundred thirty-eight billion, six hundred sixty-six million, one hundred five thousand, eight hundred fifty-seven".