6424643056 has 20 divisors (see below), whose sum is σ = 13405265272. Its totient is φ = 2965219776.

The previous prime is 6424643053. The next prime is 6424643083. The reversal of 6424643056 is 6503464246.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6424643053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15443646 + ... + 15444061.

Almost surely, 2^6424643056 is an apocalyptic number.

It is an amenable number.

6424643056 is an abundant number, since it is smaller than the sum of its proper divisors (6980622216).

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

6424643056 is a wasteful number, since it uses less digits than its factorization.

6424643056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30887728 (or 30887722 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 40.

The square root of 6424643056 is about 80153.8711229844. The cubic root of 6424643056 is about 1859.0154592193.

The spelling of 6424643056 in words is "six billion, four hundred twenty-four million, six hundred forty-three thousand, fifty-six".