8166550000 has 120 divisors (see below), whose sum is σ = 22603365792. Its totient is φ = 2799840000.

The previous prime is 8166549991. The next prime is 8166550013. The reversal of 8166550000 is 556618.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 338334 + ... + 361666.

Almost surely, 2^8166550000 is an apocalyptic number.

8166550000 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8166550000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11301682896).

8166550000 is an abundant number, since it is smaller than the sum of its proper divisors (14436815792).

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

8166550000 is an equidigital number, since it uses as much as digits as its factorization.

8166550000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23373 (or 23347 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 31.

The square root of 8166550000 is about 90368.9659119767. The cubic root of 8166550000 is about 2013.7839497880.

The spelling of 8166550000 in words is "eight billion, one hundred sixty-six million, five hundred fifty thousand".