8921563116 has 48 divisors (see below), whose sum is σ = 21344400000. Its totient is φ = 2898790272.

The previous prime is 8921563111. The next prime is 8921563169. The reversal of 8921563116 is 6113651298.

It is not an unprimeable number, because it can be changed into a prime (8921563111) 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, 240160 + ... + 274808.

It is an arithmetic number, because the mean of its divisors is an integer number (444675000).

Almost surely, 2^8921563116 is an apocalyptic number.

8921563116 is a gapful number since it is divisible by the number (86) formed by its first and last digit.

It is an amenable number.

8921563116 is an abundant number, since it is smaller than the sum of its proper divisors (12422836884).

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

8921563116 is a wasteful number, since it uses less digits than its factorization.

8921563116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35198 (or 35196 counting only the distinct ones).

The product of its digits is 77760, while the sum is 42.

The square root of 8921563116 is about 94454.0264679066. The cubic root of 8921563116 is about 2074.0233941865.

The spelling of 8921563116 in words is "eight billion, nine hundred twenty-one million, five hundred sixty-three thousand, one hundred sixteen".