5639844672 has 560 divisors, whose sum is σ = 21243340800. Its totient is φ = 1437004800.

The previous prime is 5639844653. The next prime is 5639844677. The reversal of 5639844672 is 2764489365.

5639844672 is a `hidden beast` number, since 563 + 9 + 8 + 4 + 4 + 6 + 72 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5639844677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 28340829 + ... + 28341027.

Almost surely, 2^5639844672 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 5639844672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10621670400).

5639844672 is an abundant number, since it is smaller than the sum of its proper divisors (15603496128).

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

5639844672 is a wasteful number, since it uses less digits than its factorization.

5639844672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312 (or 293 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 54.

The square root of 5639844672 is about 75098.8992728921. The cubic root of 5639844672 is about 1780.0097495573.

The spelling of 5639844672 in words is "five billion, six hundred thirty-nine million, eight hundred forty-four thousand, six hundred seventy-two".