668134081348 has 12 divisors (see below), whose sum is σ = 1169334496960. Its totient is φ = 334038510792.

The previous prime is 668134081343. The next prime is 668134081397. The reversal of 668134081348 is 843180431866.

It is a junction number, because it is equal to n+sod(n) for n = 668134081295 and 668134081304.

It is not an unprimeable number, because it can be changed into a prime (668134081343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7079736 + ... + 7173487.

Almost surely, 2^668134081348 is an apocalyptic number.

It is an amenable number.

668134081348 is a deficient number, since it is larger than the sum of its proper divisors (501200415612).

668134081348 is a wasteful number, since it uses less digits than its factorization.

668134081348 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14264946 (or 14264944 counting only the distinct ones).

The product of its (nonzero) digits is 2654208, while the sum is 52.

The spelling of 668134081348 in words is "six hundred sixty-eight billion, one hundred thirty-four million, eighty-one thousand, three hundred forty-eight".