5644644320 has 96 divisors (see below), whose sum is σ = 15255511488. Its totient is φ = 1933406208.

The previous prime is 5644644311. The next prime is 5644644389. The reversal of 5644644320 is 234464465.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1603202 + ... + 1606718.

It is an arithmetic number, because the mean of its divisors is an integer number (158911578).

Almost surely, 2^5644644320 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 5644644320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7627755744).

5644644320 is an abundant number, since it is smaller than the sum of its proper divisors (9610867168).

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

5644644320 is a wasteful number, since it uses less digits than its factorization.

5644644320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4972 (or 4964 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 38.

The square root of 5644644320 is about 75130.8479920199. The cubic root of 5644644320 is about 1780.5145505653.

The spelling of 5644644320 in words is "five billion, six hundred forty-four million, six hundred forty-four thousand, three hundred twenty".