668560229120 has 288 divisors, whose sum is σ = 1928489472000. Its totient is φ = 216933285888.

The previous prime is 668560229053. The next prime is 668560229123. The reversal of 668560229120 is 21922065866.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (668560229123) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 278681681 + ... + 278684079.

It is an arithmetic number, because the mean of its divisors is an integer number (6696144000).

Almost surely, 2^668560229120 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 668560229120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (964244736000).

668560229120 is an abundant number, since it is smaller than the sum of its proper divisors (1259929242880).

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

668560229120 is a wasteful number, since it uses less digits than its factorization.

668560229120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4083 (or 4069 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 47.

The spelling of 668560229120 in words is "six hundred sixty-eight billion, five hundred sixty million, two hundred twenty-nine thousand, one hundred twenty".