8116215804 has 144 divisors (see below), whose sum is σ = 21785924160. Its totient is φ = 2542510080.

The previous prime is 8116215799. The next prime is 8116215841. The reversal of 8116215804 is 4085126118.

8116215804 is a `hidden beast` number, since 8 + 11 + 62 + 1 + 580 + 4 = 666.

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

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 17759544 + ... + 17760000.

It is an arithmetic number, because the mean of its divisors is an integer number (151291140).

Almost surely, 2^8116215804 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 8116215804, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10892962080).

8116215804 is an abundant number, since it is smaller than the sum of its proper divisors (13669708356).

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

8116215804 is a wasteful number, since it uses less digits than its factorization.

8116215804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 820 (or 815 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 36.

The square root of 8116215804 is about 90090.0427572326. The cubic root of 8116215804 is about 2009.6381289584.

The spelling of 8116215804 in words is "eight billion, one hundred sixteen million, two hundred fifteen thousand, eight hundred four".