6616555165 has 8 divisors (see below), whose sum is σ = 8661672288. Its totient is φ = 4812040080.

The previous prime is 6616555163. The next prime is 6616555171. The reversal of 6616555165 is 5615556166.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6616555165 - 2¹ = 6616555163 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6616555163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60150447 + ... + 60150556.

It is an arithmetic number, because the mean of its divisors is an integer number (1082709036).

Almost surely, 2^6616555165 is an apocalyptic number.

It is an amenable number.

6616555165 is a deficient number, since it is larger than the sum of its proper divisors (2045117123).

6616555165 is a wasteful number, since it uses less digits than its factorization.

6616555165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120301019.

The product of its digits is 810000, while the sum is 46.

The square root of 6616555165 is about 81342.2102293760. The cubic root of 6616555165 is about 1877.3445198471.

The spelling of 6616555165 in words is "six billion, six hundred sixteen million, five hundred fifty-five thousand, one hundred sixty-five".