8509308012 has 96 divisors (see below), whose sum is σ = 22670869760. Its totient is φ = 2758613760.

The previous prime is 8509307987. The next prime is 8509308037. The reversal of 8509308012 is 2108039058.

It is an interprime number because it is at equal distance from previous prime (8509307987) and next prime (8509308037).

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 31 ways as a sum of consecutive naturals, for example, 1115403 + ... + 1123005.

Almost surely, 2^8509308012 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 8509308012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11335434880).

8509308012 is an abundant number, since it is smaller than the sum of its proper divisors (14161561748).

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

8509308012 is a wasteful number, since it uses less digits than its factorization.

8509308012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7900 (or 7892 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 8509308012 is about 92245.9105435032. The cubic root of 8509308012 is about 2041.5722222375.

The spelling of 8509308012 in words is "eight billion, five hundred nine million, three hundred eight thousand, twelve".