5518477440 has 768 divisors, whose sum is σ = 23577765120. Its totient is φ = 1160773632.

The previous prime is 5518477417. The next prime is 5518477441. The reversal of 5518477440 is 447748155.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (5518477441) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 56891472 + ... + 56891568.

It is an arithmetic number, because the mean of its divisors is an integer number (30700215).

Almost surely, 2^5518477440 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 5518477440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11788882560).

5518477440 is an abundant number, since it is smaller than the sum of its proper divisors (18059287680).

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

5518477440 is a wasteful number, since it uses less digits than its factorization.

5518477440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229 (or 214 counting only the distinct ones).

The product of its (nonzero) digits is 627200, while the sum is 45.

The square root of 5518477440 is about 74286.4552930075. The cubic root of 5518477440 is about 1767.1486793626.

The spelling of 5518477440 in words is "five billion, five hundred eighteen million, four hundred seventy-seven thousand, four hundred forty".