643103644316 has 24 divisors (see below), whose sum is σ = 1300659060960. Its totient is φ = 272519039232.

The previous prime is 643103644301. The next prime is 643103644333. The reversal of 643103644316 is 613446301346.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129031145 + ... + 129036128.

It is an arithmetic number, because the mean of its divisors is an integer number (54194127540).

Almost surely, 2^643103644316 is an apocalyptic number.

It is an amenable number.

643103644316 is an abundant number, since it is smaller than the sum of its proper divisors (657555416644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

643103644316 is a wasteful number, since it uses less digits than its factorization.

643103644316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258067373 (or 258067371 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 41.

The spelling of 643103644316 in words is "six hundred forty-three billion, one hundred three million, six hundred forty-four thousand, three hundred sixteen".