5520404640 has 96 divisors (see below), whose sum is σ = 17405720640. Its totient is φ = 1470715904.

The previous prime is 5520404627. The next prime is 5520404663. The reversal of 5520404640 is 464040255.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 5520404598 and 5520404607.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 564916 + ... + 574604.

It is an arithmetic number, because the mean of its divisors is an integer number (181309590).

Almost surely, 2^5520404640 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 5520404640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8702860320).

5520404640 is an abundant number, since it is smaller than the sum of its proper divisors (11885316000).

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

5520404640 is a wasteful number, since it uses less digits than its factorization.

5520404640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10894 (or 10886 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 30.

The square root of 5520404640 is about 74299.4255697849. The cubic root of 5520404640 is about 1767.3543672902.

Adding to 5520404640 its reverse (464040255), we get a palindrome (5984444895).

The spelling of 5520404640 in words is "five billion, five hundred twenty million, four hundred four thousand, six hundred forty".