6440624204628 has 48 divisors (see below), whose sum is σ = 15146076516480. Its totient is φ = 2130058896000.

The previous prime is 6440624204611. The next prime is 6440624204701. The reversal of 6440624204628 is 8264024260446.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 677043 + ... + 3652346.

It is an arithmetic number, because the mean of its divisors is an integer number (315543260760).

Almost surely, 2^{6440624204628} is an apocalyptic number.

It is an amenable number.

6440624204628 is an abundant number, since it is smaller than the sum of its proper divisors (8705452311852).

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

6440624204628 is a wasteful number, since it uses less digits than its factorization.

6440624204628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4330368 (or 4330366 counting only the distinct ones).

The product of its (nonzero) digits is 3538944, while the sum is 48.

The spelling of 6440624204628 in words is "six trillion, four hundred forty billion, six hundred twenty-four million, two hundred four thousand, six hundred twenty-eight".