8521868768 has 48 divisors (see below), whose sum is σ = 19207165824. Its totient is φ = 3645951360.

The previous prime is 8521868753. The next prime is 8521868807. The reversal of 8521868768 is 8678681258.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99083 + ... + 163893.

It is an arithmetic number, because the mean of its divisors is an integer number (400149288).

Almost surely, 2^8521868768 is an apocalyptic number.

It is an amenable number.

8521868768 is an abundant number, since it is smaller than the sum of its proper divisors (10685297056).

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

8521868768 is a wasteful number, since it uses less digits than its factorization.

8521868768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65415 (or 65407 counting only the distinct ones).

The product of its digits is 10321920, while the sum is 59.

The square root of 8521868768 is about 92313.9684338183. The cubic root of 8521868768 is about 2042.5762632682.

The spelling of 8521868768 in words is "eight billion, five hundred twenty-one million, eight hundred sixty-eight thousand, seven hundred sixty-eight".