643145416306 has 16 divisors (see below), whose sum is σ = 981558672480. Its totient is φ = 315983131200.

The previous prime is 643145416297. The next prime is 643145416351. The reversal of 643145416306 is 603614541346.

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, 5930796 + ... + 6038263.

It is an arithmetic number, because the mean of its divisors is an integer number (61347417030).

Almost surely, 2^643145416306 is an apocalyptic number.

643145416306 is a deficient number, since it is larger than the sum of its proper divisors (338413256174).

643145416306 is a wasteful number, since it uses less digits than its factorization.

643145416306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11969529.

The product of its (nonzero) digits is 622080, while the sum is 43.

The spelling of 643145416306 in words is "six hundred forty-three billion, one hundred forty-five million, four hundred sixteen thousand, three hundred six".