5516601666 has 64 divisors (see below), whose sum is σ = 11428065792. Its totient is φ = 1774265472.

The previous prime is 5516601637. The next prime is 5516601703. The reversal of 5516601666 is 6661066155.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9798301 + ... + 9798863.

It is an arithmetic number, because the mean of its divisors is an integer number (178563528).

Almost surely, 2^5516601666 is an apocalyptic number.

5516601666 is an abundant number, since it is smaller than the sum of its proper divisors (5911464126).

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

5516601666 is a wasteful number, since it uses less digits than its factorization.

5516601666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1007.

The product of its (nonzero) digits is 194400, while the sum is 42.

The square root of 5516601666 is about 74273.8289439827. The cubic root of 5516601666 is about 1766.9484340820.

The spelling of 5516601666 in words is "five billion, five hundred sixteen million, six hundred one thousand, six hundred sixty-six".