8513320158 has 320 divisors, whose sum is σ = 24100876800. Its totient is φ = 2191898880.

The previous prime is 8513320117. The next prime is 8513320171. The reversal of 8513320158 is 8510233158.

It is a super-2 number, since 2×8513320158² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 47034828 + ... + 47035008.

It is an arithmetic number, because the mean of its divisors is an integer number (75315240).

Almost surely, 2^8513320158 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8513320158, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12050438400).

8513320158 is an abundant number, since it is smaller than the sum of its proper divisors (15587556642).

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

8513320158 is a wasteful number, since it uses less digits than its factorization.

8513320158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317 (or 308 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The square root of 8513320158 is about 92267.6549935025. The cubic root of 8513320158 is about 2041.8930395035.

The spelling of 8513320158 in words is "eight billion, five hundred thirteen million, three hundred twenty thousand, one hundred fifty-eight".