668141406748 has 6 divisors (see below), whose sum is σ = 1169247461816. Its totient is φ = 334070703372.

The previous prime is 668141406739. The next prime is 668141406767. The reversal of 668141406748 is 847604141866.

It is a super-2 number, since 2×668141406748² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83517675840 + ... + 83517675847.

Almost surely, 2^668141406748 is an apocalyptic number.

It is an amenable number.

668141406748 is a deficient number, since it is larger than the sum of its proper divisors (501106055068).

668141406748 is a wasteful number, since it uses less digits than its factorization.

668141406748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167035351691 (or 167035351689 counting only the distinct ones).

The product of its (nonzero) digits is 6193152, while the sum is 55.

The spelling of 668141406748 in words is "six hundred sixty-eight billion, one hundred forty-one million, four hundred six thousand, seven hundred forty-eight".