648366636224 has 28 divisors (see below), whose sum is σ = 1287002891064. Its totient is φ = 324082443264.

The previous prime is 648366636221. The next prime is 648366636289. The reversal of 648366636224 is 422636663846.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 648366636224.

It is not an unprimeable number, because it can be changed into a prime (648366636221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1368674 + ... + 1780449.

Almost surely, 2^648366636224 is an apocalyptic number.

648366636224 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

648366636224 is a deficient number, since it is larger than the sum of its proper divisors (638636254840).

648366636224 is a wasteful number, since it uses less digits than its factorization.

648366636224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3152352 (or 3152342 counting only the distinct ones).

The product of its digits is 35831808, while the sum is 56.

The spelling of 648366636224 in words is "six hundred forty-eight billion, three hundred sixty-six million, six hundred thirty-six thousand, two hundred twenty-four".