668966049184 has 96 divisors (see below), whose sum is σ = 1367516473344. Its totient is φ = 321930286080.

The previous prime is 668966049137. The next prime is 668966049197. The reversal of 668966049184 is 481940669866.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39615207 + ... + 39632089.

It is an arithmetic number, because the mean of its divisors is an integer number (14244963264).

Almost surely, 2^668966049184 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 668966049184, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (683758236672).

668966049184 is an abundant number, since it is smaller than the sum of its proper divisors (698550424160).

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

668966049184 is a wasteful number, since it uses less digits than its factorization.

668966049184 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17390 (or 17382 counting only the distinct ones).

The product of its (nonzero) digits is 107495424, while the sum is 67.

The spelling of 668966049184 in words is "six hundred sixty-eight billion, nine hundred sixty-six million, forty-nine thousand, one hundred eighty-four".