5564161440 has 144 divisors (see below), whose sum is σ = 19037484648. Its totient is φ = 1479886848.

The previous prime is 5564161423. The next prime is 5564161451. The reversal of 5564161440 is 441614655.

5564161440 is a `hidden beast` number, since 5 + 5 + 641 + 6 + 1 + 4 + 4 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 5409308304 + 154853136 = 73548^2 + 12444^2 .

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 5564161395 and 5564161404.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 566814 + ... + 576546.

Almost surely, 2^5564161440 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 5564161440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9518742324).

5564161440 is an abundant number, since it is smaller than the sum of its proper divisors (13473323208).

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

5564161440 is a wasteful number, since it uses less digits than its factorization.

5564161440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10151 (or 10140 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The square root of 5564161440 is about 74593.3069383574. The cubic root of 5564161440 is about 1772.0116551844.

The spelling of 5564161440 in words is "five billion, five hundred sixty-four million, one hundred sixty-one thousand, four hundred forty".