6631544444 has 12 divisors (see below), whose sum is σ = 13263088944. Its totient is φ = 2842090464.

The previous prime is 6631544443. The next prime is 6631544473. The reversal of 6631544444 is 4444451366.

6631544444 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6631544441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 118420409 + ... + 118420464.

It is an arithmetic number, because the mean of its divisors is an integer number (1105257412).

Almost surely, 2^6631544444 is an apocalyptic number.

It is an amenable number.

6631544444 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

6631544444 is a wasteful number, since it uses less digits than its factorization.

6631544444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236840884 (or 236840882 counting only the distinct ones).

The product of its digits is 552960, while the sum is 41.

The square root of 6631544444 is about 81434.2952569739. The cubic root of 6631544444 is about 1878.7611088483.

The spelling of 6631544444 in words is "six billion, six hundred thirty-one million, five hundred forty-four thousand, four hundred forty-four".