666015324716 has 54 divisors (see below), whose sum is σ = 1363704298740. Its totient is φ = 283775383584.

The previous prime is 666015324707. The next prime is 666015324721. The reversal of 666015324716 is 617423510666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 152858810 + ... + 152863166.

It is an arithmetic number, because the mean of its divisors is an integer number (25253783310).

Almost surely, 2^666015324716 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 666015324716, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (681852149370).

666015324716 is an abundant number, since it is smaller than the sum of its proper divisors (697688974024).

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

666015324716 is an equidigital number, since it uses as much as digits as its factorization.

666015324716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8911 (or 4545 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 47.

The spelling of 666015324716 in words is "six hundred sixty-six billion, fifteen million, three hundred twenty-four thousand, seven hundred sixteen".