5565616166165 has 64 divisors (see below), whose sum is σ = 7971594497280. Its totient is φ = 3683912970240.

The previous prime is 5565616166161. The next prime is 5565616166197. The reversal of 5565616166165 is 5616616165655.

It is a happy number.

It is not a de Polignac number, because 5565616166165 - 2² = 5565616166161 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5565616166161) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5145491 + ... + 6132479.

It is an arithmetic number, because the mean of its divisors is an integer number (124556164020).

Almost surely, 2^{5565616166165} is an apocalyptic number.

5565616166165 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

5565616166165 is a deficient number, since it is larger than the sum of its proper divisors (2405978331115).

5565616166165 is a wasteful number, since it uses less digits than its factorization.

5565616166165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 987222.

The product of its digits is 29160000, while the sum is 59.

The spelling of 5565616166165 in words is "five trillion, five hundred sixty-five billion, six hundred sixteen million, one hundred sixty-six thousand, one hundred sixty-five".