6387688945871 has 2 divisors, whose sum is σ = 6387688945872. Its totient is φ = 6387688945870.

The previous prime is 6387688945793. The next prime is 6387688945919. The reversal of 6387688945871 is 1785498867836.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6387688945871 - 2²⁶ = 6387621837007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6387688945271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3193844472935 + 3193844472936.

It is an arithmetic number, because the mean of its divisors is an integer number (3193844472936).

Almost surely, 2^{6387688945871} is an apocalyptic number.

6387688945871 is a deficient number, since it is larger than the sum of its proper divisors (1).

6387688945871 is an equidigital number, since it uses as much as digits as its factorization.

6387688945871 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3901685760, while the sum is 80.

The spelling of 6387688945871 in words is "six trillion, three hundred eighty-seven billion, six hundred eighty-eight million, nine hundred forty-five thousand, eight hundred seventy-one".