6660109008 has 420 divisors, whose sum is σ = 23114169408. Its totient is φ = 1851776640.

The previous prime is 6660108947. The next prime is 6660109019. The reversal of 6660109008 is 8009010666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 83 ways as a sum of consecutive naturals, for example, 24575913 + ... + 24576183.

Almost surely, 2^6660109008 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 6660109008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11557084704).

6660109008 is an abundant number, since it is smaller than the sum of its proper divisors (16454060400).

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

6660109008 is a wasteful number, since it uses less digits than its factorization.

6660109008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354 (or 326 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 6660109008 is about 81609.4909186425. The cubic root of 6660109008 is about 1881.4547560080.

The spelling of 6660109008 in words is "six billion, six hundred sixty million, one hundred nine thousand, eight".