668348430880 has 192 divisors, whose sum is σ = 1723820313600. Its totient is φ = 243387555840.

The previous prime is 668348430853. The next prime is 668348430901. The reversal of 668348430880 is 88034843866.

668348430880 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 217065181 + ... + 217068259.

It is an arithmetic number, because the mean of its divisors is an integer number (8978230800).

Almost surely, 2^668348430880 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 668348430880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (861910156800).

668348430880 is an abundant number, since it is smaller than the sum of its proper divisors (1055471882720).

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

668348430880 is a wasteful number, since it uses less digits than its factorization.

668348430880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4507 (or 4499 counting only the distinct ones).

The product of its (nonzero) digits is 21233664, while the sum is 58.

The spelling of 668348430880 in words is "six hundred sixty-eight billion, three hundred forty-eight million, four hundred thirty thousand, eight hundred eighty".