643062044424 has 32 divisors (see below), whose sum is σ = 1663091496000. Its totient is φ = 206962496832.

The previous prime is 643062044407. The next prime is 643062044431. The reversal of 643062044424 is 424440260346.

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, 461969164 + ... + 461970555.

It is an arithmetic number, because the mean of its divisors is an integer number (51971609250).

Almost surely, 2^643062044424 is an apocalyptic number.

It is an amenable number.

643062044424 is an abundant number, since it is smaller than the sum of its proper divisors (1020029451576).

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

643062044424 is a wasteful number, since it uses less digits than its factorization.

643062044424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 923939757 (or 923939753 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 39.

The spelling of 643062044424 in words is "six hundred forty-three billion, sixty-two million, forty-four thousand, four hundred twenty-four".