8173525128 has 32 divisors (see below), whose sum is σ = 20488617600. Its totient is φ = 2717201088.

The previous prime is 8173525123. The next prime is 8173525189. The reversal of 8173525128 is 8215253718.

It is a self number, because there is not a number n which added to its sum of digits gives 8173525128.

It is not an unprimeable number, because it can be changed into a prime (8173525123) 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, 447568 + ... + 465471.

It is an arithmetic number, because the mean of its divisors is an integer number (640269300).

Almost surely, 2^8173525128 is an apocalyptic number.

It is an amenable number.

8173525128 is an abundant number, since it is smaller than the sum of its proper divisors (12315092472).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8173525128 is a wasteful number, since it uses less digits than its factorization.

8173525128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 913421 (or 913417 counting only the distinct ones).

The product of its digits is 134400, while the sum is 42.

The square root of 8173525128 is about 90407.5501714320. The cubic root of 8173525128 is about 2014.3571173090.

The spelling of 8173525128 in words is "eight billion, one hundred seventy-three million, five hundred twenty-five thousand, one hundred twenty-eight".