128768564287127 has 2 divisors, whose sum is σ = 128768564287128. Its totient is φ = 128768564287126.

The previous prime is 128768564287109. The next prime is 128768564287219. The reversal of 128768564287127 is 721782465867821.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 128768564287127 - 2¹⁴ = 128768564270743 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128768564287327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64384282143563 + 64384282143564.

It is an arithmetic number, because the mean of its divisors is an integer number (64384282143564).

Almost surely, 2^{128768564287127} is an apocalyptic number.

128768564287127 is a deficient number, since it is larger than the sum of its proper divisors (1).

128768564287127 is an equidigital number, since it uses as much as digits as its factorization.

128768564287127 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1011548160, while the sum is 74.

The spelling of 128768564287127 in words is "one hundred twenty-eight trillion, seven hundred sixty-eight billion, five hundred sixty-four million, two hundred eighty-seven thousand, one hundred twenty-seven".