663421103012 has 12 divisors (see below), whose sum is σ = 1160994009420. Its totient is φ = 331708528896.

The previous prime is 663421102979. The next prime is 663421103029. The reversal of 663421103012 is 210301124366.

It can be written as a sum of positive squares in 2 ways, for example, as 148921897216 + 514499205796 = 385904^2 + 717286^2 .

It is an unprimeable number.

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, 421064 + ... + 1226432.

It is an arithmetic number, because the mean of its divisors is an integer number (96749500785).

Almost surely, 2^663421103012 is an apocalyptic number.

It is an amenable number.

663421103012 is a deficient number, since it is larger than the sum of its proper divisors (497572906408).

663421103012 is a wasteful number, since it uses less digits than its factorization.

663421103012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1011310 (or 1011308 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 29.

Adding to 663421103012 its reverse (210301124366), we get a palindrome (873722227378).

The spelling of 663421103012 in words is "six hundred sixty-three billion, four hundred twenty-one million, one hundred three thousand, twelve".