668364824212 has 12 divisors (see below), whose sum is σ = 1169993008800. Its totient is φ = 334081107416.

The previous prime is 668364824173. The next prime is 668364824213. The reversal of 668364824212 is 212428463866.

It is a super-2 number, since 2×668364824212² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 668364824212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (668364824213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25311328 + ... + 25337719.

It is an arithmetic number, because the mean of its divisors is an integer number (97499417400).

Almost surely, 2^668364824212 is an apocalyptic number.

It is an amenable number.

668364824212 is a deficient number, since it is larger than the sum of its proper divisors (501628184588).

668364824212 is a wasteful number, since it uses less digits than its factorization.

668364824212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50652350 (or 50652348 counting only the distinct ones).

The product of its digits is 5308416, while the sum is 52.

The spelling of 668364824212 in words is "six hundred sixty-eight billion, three hundred sixty-four million, eight hundred twenty-four thousand, two hundred twelve".