8521507116 has 54 divisors (see below), whose sum is σ = 21916510980. Its totient is φ = 2790964176.

The previous prime is 8521507103. The next prime is 8521507121. The reversal of 8521507116 is 6117051258.

8521507116 is a `hidden beast` number, since 8 + 521 + 50 + 71 + 16 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 4253371 + ... + 4255373.

Almost surely, 2^8521507116 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8521507116, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10958255490).

8521507116 is an abundant number, since it is smaller than the sum of its proper divisors (13395003864).

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

8521507116 is a wasteful number, since it uses less digits than its factorization.

8521507116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4075 (or 2067 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 36.

The square root of 8521507116 is about 92312.0095978849. The cubic root of 8521507116 is about 2042.5473685010.

The spelling of 8521507116 in words is "eight billion, five hundred twenty-one million, five hundred seven thousand, one hundred sixteen".