643301050353 has 16 divisors (see below), whose sum is σ = 923784738240. Its totient is φ = 395847393984.

The previous prime is 643301050319. The next prime is 643301050453. The reversal of 643301050353 is 353050103346.

It is a happy number.

It is not a de Polignac number, because 643301050353 - 2¹⁷ = 643300919281 is a prime.

It is not an unprimeable number, because it can be changed into a prime (643301050453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104926 + ... + 1139127.

It is an arithmetic number, because the mean of its divisors is an integer number (57736546140).

Almost surely, 2^643301050353 is an apocalyptic number.

It is an amenable number.

643301050353 is a deficient number, since it is larger than the sum of its proper divisors (280483687887).

643301050353 is a wasteful number, since it uses less digits than its factorization.

643301050353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1257328.

The product of its (nonzero) digits is 48600, while the sum is 33.

Adding to 643301050353 its reverse (353050103346), we get a palindrome (996351153699).

The spelling of 643301050353 in words is "six hundred forty-three billion, three hundred one million, fifty thousand, three hundred fifty-three".