663445225122 has 16 divisors (see below), whose sum is σ = 1327775652000. Its totient is φ = 221000874752.

The previous prime is 663445225111. The next prime is 663445225123. The reversal of 663445225122 is 221522544366.

It is not an unprimeable number, because it can be changed into a prime (663445225123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36873663 + ... + 36891650.

It is an arithmetic number, because the mean of its divisors is an integer number (82985978250).

Almost surely, 2^663445225122 is an apocalyptic number.

663445225122 is an abundant number, since it is smaller than the sum of its proper divisors (664330426878).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

663445225122 is a wasteful number, since it uses less digits than its factorization.

663445225122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73766817.

The product of its digits is 691200, while the sum is 42.

Adding to 663445225122 its reverse (221522544366), we get a palindrome (884967769488).

The spelling of 663445225122 in words is "six hundred sixty-three billion, four hundred forty-five million, two hundred twenty-five thousand, one hundred twenty-two".