5616663840 has 144 divisors (see below), whose sum is σ = 19220088888. Its totient is φ = 1493618688.

The previous prime is 5616663839. The next prime is 5616663931. The reversal of 5616663840 is 483666165.

It can be written as a sum of positive squares in 4 ways, for example, as 5381102736 + 235561104 = 73356^2 + 15348^2 .

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

It is a super-3 number, since 3×5616663840³ (a number of 30 digits) contains 333 as substring.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 531892 + ... + 542348.

Almost surely, 2^5616663840 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 5616663840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9610044444).

5616663840 is an abundant number, since it is smaller than the sum of its proper divisors (13603425048).

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

5616663840 is a wasteful number, since it uses less digits than its factorization.

5616663840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10851 (or 10840 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 45.

The square root of 5616663840 is about 74944.4049946359. The cubic root of 5616663840 is about 1777.5676747306.

The spelling of 5616663840 in words is "five billion, six hundred sixteen million, six hundred sixty-three thousand, eight hundred forty".