128478584085 has 16 divisors (see below), whose sum is σ = 214503375744. Its totient is φ = 65542697792.

The previous prime is 128478584083. The next prime is 128478584093. The reversal of 128478584085 is 580485874821.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 128478584085 - 2¹ = 128478584083 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128478584083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 186200502 + ... + 186201191.

It is an arithmetic number, because the mean of its divisors is an integer number (13406460984).

Almost surely, 2^128478584085 is an apocalyptic number.

128478584085 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

128478584085 is a deficient number, since it is larger than the sum of its proper divisors (86024791659).

128478584085 is a wasteful number, since it uses less digits than its factorization.

128478584085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372401724.

The product of its (nonzero) digits is 22937600, while the sum is 60.

The spelling of 128478584085 in words is "one hundred twenty-eight billion, four hundred seventy-eight million, five hundred eighty-four thousand, eighty-five".