668148022208 has 28 divisors (see below), whose sum is σ = 1333520162520. Its totient is φ = 332142941952.

The previous prime is 668148022187. The next prime is 668148022219. The reversal of 668148022208 is 802220841866.

It is a happy number.

668148022208 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×668148022208² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30161798 + ... + 30183941.

It is an arithmetic number, because the mean of its divisors is an integer number (47625720090).

Almost surely, 2^668148022208 is an apocalyptic number.

It is an amenable number.

668148022208 is a deficient number, since it is larger than the sum of its proper divisors (665372140312).

668148022208 is a wasteful number, since it uses less digits than its factorization.

668148022208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60345924 (or 60345914 counting only the distinct ones).

The product of its (nonzero) digits is 589824, while the sum is 47.

The spelling of 668148022208 in words is "six hundred sixty-eight billion, one hundred forty-eight million, twenty-two thousand, two hundred eight".