5521440064 has 112 divisors (see below), whose sum is σ = 13306056192. Its totient is φ = 2219139072.

The previous prime is 5521440059. The next prime is 5521440073. The reversal of 5521440064 is 4600441255.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (112).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2413129 + ... + 2415415.

Almost surely, 2^5521440064 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 5521440064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6653028096).

5521440064 is an abundant number, since it is smaller than the sum of its proper divisors (7784616128).

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

5521440064 is a wasteful number, since it uses less digits than its factorization.

5521440064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2640 (or 2630 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 31.

The square root of 5521440064 is about 74306.3931569821. The cubic root of 5521440064 is about 1767.4648571817.

The spelling of 5521440064 in words is "five billion, five hundred twenty-one million, four hundred forty thousand, sixty-four".