643006145244376 has 32 divisors (see below), whose sum is σ = 1294043390630640. Its totient is φ = 298446043235328.

The previous prime is 643006145244371. The next prime is 643006145244389. The reversal of 643006145244376 is 673442541600346.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (643006145244371) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32383458306 + ... + 32383478161.

Almost surely, 2^{643006145244376} is an apocalyptic number.

It is an amenable number.

643006145244376 is an abundant number, since it is smaller than the sum of its proper divisors (651037245386264).

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

643006145244376 is a wasteful number, since it uses less digits than its factorization.

643006145244376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64766936563 (or 64766936559 counting only the distinct ones).

The product of its (nonzero) digits is 34836480, while the sum is 55.

The spelling of 643006145244376 in words is "six hundred forty-three trillion, six billion, one hundred forty-five million, two hundred forty-four thousand, three hundred seventy-six".