128605473285 has 32 divisors (see below), whose sum is σ = 206623726848. Its totient is φ = 68304783360.

The previous prime is 128605473253. The next prime is 128605473287. The reversal of 128605473285 is 582374506821.

It is not a de Polignac number, because 128605473285 - 2⁵ = 128605473253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128605473287) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20830459 + ... + 20836631.

It is an arithmetic number, because the mean of its divisors is an integer number (6456991464).

Almost surely, 2^128605473285 is an apocalyptic number.

128605473285 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

128605473285 is a deficient number, since it is larger than the sum of its proper divisors (78018253563).

128605473285 is a wasteful number, since it uses less digits than its factorization.

128605473285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11725.

The product of its (nonzero) digits is 3225600, while the sum is 51.

The spelling of 128605473285 in words is "one hundred twenty-eight billion, six hundred five million, four hundred seventy-three thousand, two hundred eighty-five".