6660516016 has 80 divisors (see below), whose sum is σ = 16216104960. Its totient is φ = 2574512640.

The previous prime is 6660516013. The next prime is 6660516017. The reversal of 6660516016 is 6106150666.

It is not an unprimeable number, because it can be changed into a prime (6660516013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135180 + ... + 177748.

It is an arithmetic number, because the mean of its divisors is an integer number (202701312).

Almost surely, 2^6660516016 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 6660516016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8108052480).

6660516016 is an abundant number, since it is smaller than the sum of its proper divisors (9555588944).

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

6660516016 is a wasteful number, since it uses less digits than its factorization.

6660516016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42722 (or 42716 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 6660516016 is about 81611.9845120801. The cubic root of 6660516016 is about 1881.4930812836.

It can be divided in two parts, 66605 and 16016, that added together give a triangular number (82621 = T₄₀₆).

The spelling of 6660516016 in words is "six billion, six hundred sixty million, five hundred sixteen thousand, sixteen".