8166055500 has 240 divisors, whose sum is σ = 26827024224. Its totient is φ = 2162505600.

The previous prime is 8166055487. The next prime is 8166055501. The reversal of 8166055500 is 55506618.

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

It is not an unprimeable number, because it can be changed into a prime (8166055501) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 6600882 + ... + 6602118.

Almost surely, 2^8166055500 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 8166055500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13413512112).

8166055500 is an abundant number, since it is smaller than the sum of its proper divisors (18660968724).

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

8166055500 is a wasteful number, since it uses less digits than its factorization.

8166055500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1431 (or 1410 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 36.

The square root of 8166055500 is about 90366.2298649224. The cubic root of 8166055500 is about 2013.7433028293.

The spelling of 8166055500 in words is "eight billion, one hundred sixty-six million, fifty-five thousand, five hundred".