5511784320 has 768 divisors, whose sum is σ = 23203514880. Its totient is φ = 1224253440.

The previous prime is 5511784277. The next prime is 5511784337. The reversal of 5511784320 is 234871155.

5511784320 is a `hidden beast` number, since 5 + 51 + 178 + 432 + 0 = 666.

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 polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 66406999 + ... + 66407081.

It is an arithmetic number, because the mean of its divisors is an integer number (30212910).

Almost surely, 2^5511784320 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 5511784320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11601757440).

5511784320 is an abundant number, since it is smaller than the sum of its proper divisors (17691730560).

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

5511784320 is an equidigital number, since it uses as much as digits as its factorization.

5511784320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185 (or 161 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 36.

The square root of 5511784320 is about 74241.3922283250. The cubic root of 5511784320 is about 1766.4339578774.

It can be divided in two parts, 551 and 1784320, that added together give a palindrome (1784871).

The spelling of 5511784320 in words is "five billion, five hundred eleven million, seven hundred eighty-four thousand, three hundred twenty".