643212484212346 has 32 divisors (see below), whose sum is σ = 995613292627200. Its totient is φ = 311487175272000.

The previous prime is 643212484212301. The next prime is 643212484212367.

It is a happy number.

643212484212346 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 643212484212293 and 643212484212302.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1123261 + ... + 35884351.

It is an arithmetic number, because the mean of its divisors is an integer number (31112915394600).

Almost surely, 2^{643212484212346} is an apocalyptic number.

643212484212346 is a deficient number, since it is larger than the sum of its proper divisors (352400808414854).

643212484212346 is a wasteful number, since it uses less digits than its factorization.

643212484212346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34763190.

The product of its digits is 10616832, while the sum is 52.

The spelling of 643212484212346 in words is "six hundred forty-three trillion, two hundred twelve billion, four hundred eighty-four million, two hundred twelve thousand, three hundred forty-six".