8523128085 has 16 divisors (see below), whose sum is σ = 13639147200. Its totient is φ = 4544954240.

The previous prime is 8523128077. The next prime is 8523128087. The reversal of 8523128085 is 5808213258.

It is not a de Polignac number, because 8523128085 - 2³ = 8523128077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8523128087) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62305 + ... + 144665.

It is an arithmetic number, because the mean of its divisors is an integer number (852446700).

Almost surely, 2^8523128085 is an apocalyptic number.

It is an amenable number.

8523128085 is a deficient number, since it is larger than the sum of its proper divisors (5116019115).

8523128085 is a wasteful number, since it uses less digits than its factorization.

8523128085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89268.

The product of its (nonzero) digits is 153600, while the sum is 42.

The square root of 8523128085 is about 92320.7890185087. The cubic root of 8523128085 is about 2042.6768720426.

The spelling of 8523128085 in words is "eight billion, five hundred twenty-three million, one hundred twenty-eight thousand, eighty-five".