643223380224 has 36 divisors (see below), whose sum is σ = 1711912227536. Its totient is φ = 214407793152.

The previous prime is 643223380201. The next prime is 643223380237. The reversal of 643223380224 is 422083322346.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 418764454 + ... + 418765989.

Almost surely, 2^643223380224 is an apocalyptic number.

643223380224 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

643223380224 is an abundant number, since it is smaller than the sum of its proper divisors (1068688847312).

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

643223380224 is an equidigital number, since it uses as much as digits as its factorization.

643223380224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 837530462 (or 837530448 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 39.

The spelling of 643223380224 in words is "six hundred forty-three billion, two hundred twenty-three million, three hundred eighty thousand, two hundred twenty-four".