8128914872 has 24 divisors (see below), whose sum is σ = 16504345440. Its totient is φ = 3751806240.

The previous prime is 8128914841. The next prime is 8128914887. The reversal of 8128914872 is 2784198218.

It is a self number, because there is not a number n which added to its sum of digits gives 8128914872.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3004904 + ... + 3007607.

It is an arithmetic number, because the mean of its divisors is an integer number (687681060).

Almost surely, 2^8128914872 is an apocalyptic number.

It is an amenable number.

8128914872 is an abundant number, since it is smaller than the sum of its proper divisors (8375430568).

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

8128914872 is a wasteful number, since it uses less digits than its factorization.

8128914872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6012543 (or 6012526 counting only the distinct ones).

The product of its digits is 516096, while the sum is 50.

The square root of 8128914872 is about 90160.4950740622. The cubic root of 8128914872 is about 2010.6857121000.

The spelling of 8128914872 in words is "eight billion, one hundred twenty-eight million, nine hundred fourteen thousand, eight hundred seventy-two".