5631358320 has 720 divisors, whose sum is σ = 23992750080. Its totient is φ = 1175731200.

The previous prime is 5631358297. The next prime is 5631358331. The reversal of 5631358320 is 238531365.

5631358320 is a `hidden beast` number, since 5 + 63 + 13 + 583 + 2 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (720).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 20779785 + ... + 20780055.

It is an arithmetic number, because the mean of its divisors is an integer number (33323264).

Almost surely, 2^5631358320 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 5631358320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11996375040).

5631358320 is an abundant number, since it is smaller than the sum of its proper divisors (18361391760).

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

5631358320 is a wasteful number, since it uses less digits than its factorization.

5631358320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354 (or 338 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The square root of 5631358320 is about 75042.3768280296. The cubic root of 5631358320 is about 1779.1164996455.

Adding to 5631358320 its reverse (238531365), we get a palindrome (5869889685).

The spelling of 5631358320 in words is "five billion, six hundred thirty-one million, three hundred fifty-eight thousand, three hundred twenty".