643324303423346 has 8 divisors (see below), whose sum is σ = 970317872014764. Its totient is φ = 319885012751760.

The previous prime is 643324303423339. The next prime is 643324303423387.

643324303423346 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 2 ways, for example, as 616596489112321 + 26727814311025 = 24831361^2 + 5169895^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 643324303423294 and 643324303423303.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 888569479505 + ... + 888569480228.

Almost surely, 2^{643324303423346} is an apocalyptic number.

643324303423346 is a deficient number, since it is larger than the sum of its proper divisors (326993568591418).

643324303423346 is a wasteful number, since it uses less digits than its factorization.

643324303423346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1777138959916.

The product of its (nonzero) digits is 26873856, while the sum is 50.

It can be divided in two parts, 64332430 and 3423346, that added together give a palindrome (67755776).

The spelling of 643324303423346 in words is "six hundred forty-three trillion, three hundred twenty-four billion, three hundred three million, four hundred twenty-three thousand, three hundred forty-six".