6556224444 has 96 divisors (see below), whose sum is σ = 19432659456. Its totient is φ = 1670772480.

The previous prime is 6556224431. The next prime is 6556224449. The reversal of 6556224444 is 4444226556.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 6556224396 and 6556224405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6556224449) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17967 + ... + 115910.

It is an arithmetic number, because the mean of its divisors is an integer number (202423536).

Almost surely, 2^6556224444 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6556224444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9716329728).

6556224444 is an abundant number, since it is smaller than the sum of its proper divisors (12876435012).

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

6556224444 is a wasteful number, since it uses less digits than its factorization.

6556224444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133955 (or 133953 counting only the distinct ones).

The product of its digits is 921600, while the sum is 42.

The square root of 6556224444 is about 80970.5158931324. The cubic root of 6556224444 is about 1871.6211212282.

It can be divided in two parts, 655622 and 4444, that added together give a palindrome (660066).

The spelling of 6556224444 in words is "six billion, five hundred fifty-six million, two hundred twenty-four thousand, four hundred forty-four".