643297792346 has 16 divisors (see below), whose sum is σ = 1052703064800. Its totient is φ = 292398656880.

The previous prime is 643297792339. The next prime is 643297792351.

643297792346 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 250700 + ... + 1161656.

It is an arithmetic number, because the mean of its divisors is an integer number (65793941550).

Almost surely, 2^643297792346 is an apocalyptic number.

643297792346 is a deficient number, since it is larger than the sum of its proper divisors (409405272454).

643297792346 is a wasteful number, since it uses less digits than its factorization.

643297792346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 943069.

The product of its digits is 82301184, while the sum is 62.

The spelling of 643297792346 in words is "six hundred forty-three billion, two hundred ninety-seven million, seven hundred ninety-two thousand, three hundred forty-six".