128879567767 has 2 divisors, whose sum is σ = 128879567768. Its totient is φ = 128879567766.

The previous prime is 128879567701. The next prime is 128879567771. The reversal of 128879567767 is 767765978821.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 128879567767 - 2³¹ = 126732084119 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 128879567767.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128879537767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64439783883 + 64439783884.

It is an arithmetic number, because the mean of its divisors is an integer number (64439783884).

Almost surely, 2^128879567767 is an apocalyptic number.

128879567767 is a deficient number, since it is larger than the sum of its proper divisors (1).

128879567767 is an equidigital number, since it uses as much as digits as its factorization.

128879567767 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 497871360, while the sum is 73.

The spelling of 128879567767 in words is "one hundred twenty-eight billion, eight hundred seventy-nine million, five hundred sixty-seven thousand, seven hundred sixty-seven".