668280810022 has 32 divisors (see below), whose sum is σ = 1169321472000. Its totient is φ = 286328362824.

The previous prime is 668280810017. The next prime is 668280810023. The reversal of 668280810022 is 220018082866.

668280810022 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (668280810023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2434683 + ... + 2695225.

It is an arithmetic number, because the mean of its divisors is an integer number (36541296000).

Almost surely, 2^668280810022 is an apocalyptic number.

668280810022 is a deficient number, since it is larger than the sum of its proper divisors (501040661978).

668280810022 is a wasteful number, since it uses less digits than its factorization.

668280810022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264305 (or 264291 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 43.

Adding to 668280810022 its reverse (220018082866), we get a palindrome (888298892888).

The spelling of 668280810022 in words is "six hundred sixty-eight billion, two hundred eighty million, eight hundred ten thousand, twenty-two".