8512805172 has 24 divisors (see below), whose sum is σ = 20726830656. Its totient is φ = 2714227648.

The previous prime is 8512805153. The next prime is 8512805179. The reversal of 8512805172 is 2715082158.

It is a self number, because there is not a number n which added to its sum of digits gives 8512805172.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8512805179) 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 7 ways as a sum of consecutive naturals, for example, 15421473 + ... + 15422024.

It is an arithmetic number, because the mean of its divisors is an integer number (863617944).

Almost surely, 2^8512805172 is an apocalyptic number.

It is an amenable number.

8512805172 is an abundant number, since it is smaller than the sum of its proper divisors (12214025484).

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

8512805172 is a wasteful number, since it uses less digits than its factorization.

8512805172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30843527 (or 30843525 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 39.

The square root of 8512805172 is about 92264.8642333581. The cubic root of 8512805172 is about 2041.8518660829.

The spelling of 8512805172 in words is "eight billion, five hundred twelve million, eight hundred five thousand, one hundred seventy-two".