643310534306 has 64 divisors (see below), whose sum is σ = 1126061015040. Its totient is φ = 274839642000.

The previous prime is 643310534297. The next prime is 643310534323. The reversal of 643310534306 is 603435013346.

643310534306 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a self number, because there is not a number n which added to its sum of digits gives 643310534306.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6373331 + ... + 6473481.

It is an arithmetic number, because the mean of its divisors is an integer number (17594703360).

Almost surely, 2^643310534306 is an apocalyptic number.

643310534306 is a deficient number, since it is larger than the sum of its proper divisors (482750480734).

643310534306 is a wasteful number, since it uses less digits than its factorization.

643310534306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100332 (or 100310 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 38.

The spelling of 643310534306 in words is "six hundred forty-three billion, three hundred ten million, five hundred thirty-four thousand, three hundred six".