8855500820 has 24 divisors (see below), whose sum is σ = 19099162824. Its totient is φ = 3446464896.

The previous prime is 8855500811. The next prime is 8855500837. The reversal of 8855500820 is 280055588.

It can be written as a sum of positive squares in 4 ways, for example, as 2517430276 + 6338070544 = 50174^2 + 79612^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5982707 + ... + 5984186.

It is an arithmetic number, because the mean of its divisors is an integer number (795798451).

Almost surely, 2^8855500820 is an apocalyptic number.

It is an amenable number.

8855500820 is an abundant number, since it is smaller than the sum of its proper divisors (10243662004).

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

8855500820 is a wasteful number, since it uses less digits than its factorization.

8855500820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11966939 (or 11966937 counting only the distinct ones).

The product of its (nonzero) digits is 128000, while the sum is 41.

The square root of 8855500820 is about 94103.6705979103. The cubic root of 8855500820 is about 2068.8914708461.

The spelling of 8855500820 in words is "eight billion, eight hundred fifty-five million, five hundred thousand, eight hundred twenty".