643133122206 has 16 divisors (see below), whose sum is σ = 1330620253200. Its totient is φ = 206985372608.

The previous prime is 643133122169. The next prime is 643133122217. The reversal of 643133122206 is 602221331346.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1848083511 + ... + 1848083858.

It is an arithmetic number, because the mean of its divisors is an integer number (83163765825).

Almost surely, 2^643133122206 is an apocalyptic number.

643133122206 is an abundant number, since it is smaller than the sum of its proper divisors (687487130994).

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

643133122206 is a wasteful number, since it uses less digits than its factorization.

643133122206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3696167403.

The product of its (nonzero) digits is 31104, while the sum is 33.

The spelling of 643133122206 in words is "six hundred forty-three billion, one hundred thirty-three million, one hundred twenty-two thousand, two hundred six".