128090523285 has 128 divisors (see below), whose sum is σ = 235102003200. Its totient is φ = 66970069056.

The previous prime is 128090523283. The next prime is 128090523287. The reversal of 128090523285 is 582325090821.

128090523285 is a `hidden beast` number, since 1 + 280 + 90 + 5 + 2 + 3 + 285 = 666.

It is an interprime number because it is at equal distance from previous prime (128090523283) and next prime (128090523287).

It is not a de Polignac number, because 128090523285 - 2¹ = 128090523283 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 128090523285.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128090523283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 263019312 + ... + 263019798.

It is an arithmetic number, because the mean of its divisors is an integer number (1836734400).

Almost surely, 2^128090523285 is an apocalyptic number.

128090523285 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

128090523285 is a deficient number, since it is larger than the sum of its proper divisors (107011479915).

128090523285 is an frugal number, since it uses more digits than its factorization.

128090523285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 939 (or 921 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 45.

The spelling of 128090523285 in words is "one hundred twenty-eight billion, ninety million, five hundred twenty-three thousand, two hundred eighty-five".