4432661536 has 48 divisors (see below), whose sum is σ = 9147666528. Its totient is φ = 2111961600.

The previous prime is 4432661491. The next prime is 4432661551. The reversal of 4432661536 is 6351662344.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17131 + ... + 95701.

It is an arithmetic number, because the mean of its divisors is an integer number (190576386).

Almost surely, 2^4432661536 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 4432661536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4573833264).

4432661536 is an abundant number, since it is smaller than the sum of its proper divisors (4715004992).

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

4432661536 is a wasteful number, since it uses less digits than its factorization.

4432661536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78665 (or 78657 counting only the distinct ones).

The product of its digits is 311040, while the sum is 40.

The square root of 4432661536 is about 66578.2362037325. The cubic root of 4432661536 is about 1642.6871394337.

The spelling of 4432661536 in words is "four billion, four hundred thirty-two million, six hundred sixty-one thousand, five hundred thirty-six".