6643040226424 has 64 divisors (see below), whose sum is σ = 14329465113600. Its totient is φ = 2828176041600.

The previous prime is 6643040226419. The next prime is 6643040226517. The reversal of 6643040226424 is 4246220403466.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8874187 + ... + 9593605.

It is an arithmetic number, because the mean of its divisors is an integer number (223897892400).

Almost surely, 2^{6643040226424} is an apocalyptic number.

It is an amenable number.

6643040226424 is an abundant number, since it is smaller than the sum of its proper divisors (7686424887176).

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

6643040226424 is a wasteful number, since it uses less digits than its factorization.

6643040226424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 720524 (or 720520 counting only the distinct ones).

The product of its (nonzero) digits is 1327104, while the sum is 43.

The spelling of 6643040226424 in words is "six trillion, six hundred forty-three billion, forty million, two hundred twenty-six thousand, four hundred twenty-four".