6625944444 has 36 divisors (see below), whose sum is σ = 17984707944. Its totient is φ = 1893126816.

The previous prime is 6625944341. The next prime is 6625944473. The reversal of 6625944444 is 4444495266.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 6625944393 and 6625944402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5633719 + ... + 5634894.

Almost surely, 2^6625944444 is an apocalyptic number.

It is an amenable number.

6625944444 is an abundant number, since it is smaller than the sum of its proper divisors (11358763500).

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

6625944444 is a wasteful number, since it uses less digits than its factorization.

6625944444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11268634 (or 11268625 counting only the distinct ones).

The product of its digits is 3317760, while the sum is 48.

The square root of 6625944444 is about 81399.9044471184. The cubic root of 6625944444 is about 1878.2321207074.

The spelling of 6625944444 in words is "six billion, six hundred twenty-five million, nine hundred forty-four thousand, four hundred forty-four".