5221318320 has 400 divisors, whose sum is σ = 19309067712. Its totient is φ = 1304709120.

The previous prime is 5221318259. The next prime is 5221318423. The reversal of 5221318320 is 238131225.

5221318320 is a `hidden beast` number, since 5 + 2 + 21 + 318 + 320 = 666.

It is a super-3 number, since 3×5221318320³ (a number of 30 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 7898790 + ... + 7899450.

Almost surely, 2^5221318320 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 5221318320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9654533856).

5221318320 is an abundant number, since it is smaller than the sum of its proper divisors (14087749392).

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

5221318320 is a wasteful number, since it uses less digits than its factorization.

5221318320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 762 (or 747 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 5221318320 is about 72258.6902732121. The cubic root of 5221318320 is about 1734.8425163029.

Adding to 5221318320 its reverse (238131225), we get a palindrome (5459449545).

The spelling of 5221318320 in words is "five billion, two hundred twenty-one million, three hundred eighteen thousand, three hundred twenty".