5556665616 has 160 divisors (see below), whose sum is σ = 15047036928. Its totient is φ = 1765693440.

The previous prime is 5556665593. The next prime is 5556665629. The reversal of 5556665616 is 6165666555.

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 31 ways as a sum of consecutive naturals, for example, 18099735 + ... + 18100041.

Almost surely, 2^5556665616 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 5556665616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7523518464).

5556665616 is an abundant number, since it is smaller than the sum of its proper divisors (9490371312).

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

5556665616 is a wasteful number, since it uses less digits than its factorization.

5556665616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549 (or 543 counting only the distinct ones).

The product of its digits is 4860000, while the sum is 51.

The square root of 5556665616 is about 74543.0453898954. The cubic root of 5556665616 is about 1771.2155689729.

The spelling of 5556665616 in words is "five billion, five hundred fifty-six million, six hundred sixty-five thousand, six hundred sixteen".