5663994336 has 960 divisors, whose sum is σ = 23359311360. Its totient is φ = 1298903040.

The previous prime is 5663994269. The next prime is 5663994383. The reversal of 5663994336 is 6334993665.

It is a happy number.

5663994336 is a `hidden beast` number, since 566 + 3 + 9 + 9 + 43 + 36 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 95999875 + ... + 95999933.

It is an arithmetic number, because the mean of its divisors is an integer number (24332616).

Almost surely, 2^5663994336 is an apocalyptic number.

5663994336 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5663994336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11679655680).

5663994336 is an abundant number, since it is smaller than the sum of its proper divisors (17695317024).

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

5663994336 is a wasteful number, since it uses less digits than its factorization.

5663994336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149 (or 132 counting only the distinct ones).

The product of its digits is 9447840, while the sum is 54.

The square root of 5663994336 is about 75259.5132591223. The cubic root of 5663994336 is about 1782.5467832010.

It can be divided in two parts, 56639 and 94336, that added together give a triangular number (150975 = T₅₄₉).

The spelling of 5663994336 in words is "five billion, six hundred sixty-three million, nine hundred ninety-four thousand, three hundred thirty-six".