6651594432 has 168 divisors, whose sum is σ = 21824001056. Its totient is φ = 1897426944.

The previous prime is 6651594431. The next prime is 6651594487. The reversal of 6651594432 is 2344951566.

6651594432 is a `hidden beast` number, since 6 + 6 + 51 + 594 + 4 + 3 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (168).

It is not an unprimeable number, because it can be changed into a prime (6651594431) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4164258 + ... + 4165854.

Almost surely, 2^6651594432 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 6651594432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10912000528).

6651594432 is an abundant number, since it is smaller than the sum of its proper divisors (15172406624).

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

6651594432 is a wasteful number, since it uses less digits than its factorization.

6651594432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2655 (or 2642 counting only the distinct ones).

The product of its digits is 777600, while the sum is 45.

The square root of 6651594432 is about 81557.3076554149. The cubic root of 6651594432 is about 1880.6526359454.

The spelling of 6651594432 in words is "six billion, six hundred fifty-one million, five hundred ninety-four thousand, four hundred thirty-two".