668145714248 has 16 divisors (see below), whose sum is σ = 1259068560000. Its totient is φ = 332394098256.

The previous prime is 668145714221. The next prime is 668145714251. The reversal of 668145714248 is 842417541866.

It is a junction number, because it is equal to n+sod(n) for n = 668145714193 and 668145714202.

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, 209843168 + ... + 209846351.

It is an arithmetic number, because the mean of its divisors is an integer number (78691785000).

Almost surely, 2^668145714248 is an apocalyptic number.

It is an amenable number.

668145714248 is a deficient number, since it is larger than the sum of its proper divisors (590922845752).

668145714248 is a wasteful number, since it uses less digits than its factorization.

668145714248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419689724 (or 419689720 counting only the distinct ones).

The product of its digits is 10321920, while the sum is 56.

The spelling of 668145714248 in words is "six hundred sixty-eight billion, one hundred forty-five million, seven hundred fourteen thousand, two hundred forty-eight".