643305600403213 has 16 divisors (see below), whose sum is σ = 713297324299392. Its totient is φ = 575232234984000.

The previous prime is 643305600403181. The next prime is 643305600403261. The reversal of 643305600403213 is 312304006503346.

It is not a de Polignac number, because 643305600403213 - 2⁵ = 643305600403181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (643305600403313) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 101893920 + ... + 108023062.

It is an arithmetic number, because the mean of its divisors is an integer number (44581082768712).

Almost surely, 2^{643305600403213} is an apocalyptic number.

It is an amenable number.

643305600403213 is a deficient number, since it is larger than the sum of its proper divisors (69991723896179).

643305600403213 is a wasteful number, since it uses less digits than its factorization.

643305600403213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6285636.

The product of its (nonzero) digits is 466560, while the sum is 40.

Adding to 643305600403213 its reverse (312304006503346), we get a palindrome (955609606906559).

The spelling of 643305600403213 in words is "six hundred forty-three trillion, three hundred five billion, six hundred million, four hundred three thousand, two hundred thirteen".