4443633656 has 64 divisors (see below), whose sum is σ = 10404564480. Its totient is φ = 1728478080.

The previous prime is 4443633653. The next prime is 4443633661. The reversal of 4443633656 is 6563363444.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4443633653) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 396725 + ... + 407771.

It is an arithmetic number, because the mean of its divisors is an integer number (162571320).

Almost surely, 2^4443633656 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 4443633656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5202282240).

4443633656 is an abundant number, since it is smaller than the sum of its proper divisors (5960930824).

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

4443633656 is a wasteful number, since it uses less digits than its factorization.

4443633656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11724 (or 11720 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 44.

The square root of 4443633656 is about 66660.5854759767. The cubic root of 4443633656 is about 1644.0413979942.

The spelling of 4443633656 in words is "four billion, four hundred forty-three million, six hundred thirty-three thousand, six hundred fifty-six".