128081567 has 2 divisors, whose sum is σ = 128081568. Its totient is φ = 128081566.

The previous prime is 128081557. The next prime is 128081579. The reversal of 128081567 is 765180821.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 128081567 - 2⁸ = 128081311 is a prime.

It is a super-3 number, since 3×128081567³ (a number of 25 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 128081567.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128081537) 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, 64040783 + 64040784.

It is an arithmetic number, because the mean of its divisors is an integer number (64040784).

Almost surely, 2^128081567 is an apocalyptic number.

128081567 is a deficient number, since it is larger than the sum of its proper divisors (1).

128081567 is an equidigital number, since it uses as much as digits as its factorization.

128081567 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 26880, while the sum is 38.

The square root of 128081567 is about 11317.3127110635. The cubic root of 128081567 is about 504.0754472065.

The spelling of 128081567 in words is "one hundred twenty-eight million, eighty-one thousand, five hundred sixty-seven".