128325663852791 has 2 divisors, whose sum is σ = 128325663852792. Its totient is φ = 128325663852790.

The previous prime is 128325663852787. The next prime is 128325663852829. The reversal of 128325663852791 is 197258366523821.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 128325663852791 - 2² = 128325663852787 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128325663752791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64162831926395 + 64162831926396.

It is an arithmetic number, because the mean of its divisors is an integer number (64162831926396).

Almost surely, 2^{128325663852791} is an apocalyptic number.

128325663852791 is a deficient number, since it is larger than the sum of its proper divisors (1).

128325663852791 is an equidigital number, since it uses as much as digits as its factorization.

128325663852791 is an evil number, because the sum of its binary digits is even.

The product of its digits is 261273600, while the sum is 68.

The spelling of 128325663852791 in words is "one hundred twenty-eight trillion, three hundred twenty-five billion, six hundred sixty-three million, eight hundred fifty-two thousand, seven hundred ninety-one".