128081559 has 8 divisors (see below), whose sum is σ = 171019120. Its totient is φ = 85265856.

The previous prime is 128081557. The next prime is 128081567. The reversal of 128081559 is 955180821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 128081559 - 2¹ = 128081557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128081557) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27982 + ... + 32235.

It is an arithmetic number, because the mean of its divisors is an integer number (21377390).

Almost surely, 2^128081559 is an apocalyptic number.

128081559 is a deficient number, since it is larger than the sum of its proper divisors (42937561).

128081559 is an equidigital number, since it uses as much as digits as its factorization.

128081559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60929.

The product of its (nonzero) digits is 28800, while the sum is 39.

The square root of 128081559 is about 11317.3123576227. The cubic root of 128081559 is about 504.0754367116.

The spelling of 128081559 in words is "one hundred twenty-eight million, eighty-one thousand, five hundred fifty-nine".