8018006500 has 96 divisors (see below), whose sum is σ = 20158145280. Its totient is φ = 2729088000.

The previous prime is 8018006489. The next prime is 8018006519. The reversal of 8018006500 is 56008108.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (28).

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, 478260 + ... + 494740.

It is an arithmetic number, because the mean of its divisors is an integer number (209980680).

Almost surely, 2^8018006500 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 8018006500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10079072640).

8018006500 is an abundant number, since it is smaller than the sum of its proper divisors (12140138780).

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

8018006500 is a wasteful number, since it uses less digits than its factorization.

8018006500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16646 (or 16634 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 28.

The square root of 8018006500 is about 89543.3219173825. The cubic root of 8018006500 is about 2001.4994172597.

The spelling of 8018006500 in words is "eight billion, eighteen million, six thousand, five hundred".