643224420225132 has 24 divisors (see below), whose sum is σ = 1549271721833472. Its totient is φ = 207491748459600.

The previous prime is 643224420225089. The next prime is 643224420225137. The reversal of 643224420225132 is 231522024422346.

It is not an unprimeable number, because it can be changed into a prime (643224420225137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 864548951544 + ... + 864548952287.

It is an arithmetic number, because the mean of its divisors is an integer number (64552988409728).

Almost surely, 2^{643224420225132} is an apocalyptic number.

643224420225132 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

643224420225132 is an abundant number, since it is smaller than the sum of its proper divisors (906047301608340).

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

643224420225132 is a wasteful number, since it uses less digits than its factorization.

643224420225132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1729097903869 (or 1729097903867 counting only the distinct ones).

The product of its (nonzero) digits is 1105920, while the sum is 42.

Adding to 643224420225132 its reverse (231522024422346), we get a palindrome (874746444647478).

The spelling of 643224420225132 in words is "six hundred forty-three trillion, two hundred twenty-four billion, four hundred twenty million, two hundred twenty-five thousand, one hundred thirty-two".