6565166660105 has 16 divisors (see below), whose sum is σ = 8150053723200. Its totient is φ = 5070906025920.

The previous prime is 6565166660093. The next prime is 6565166660131. The reversal of 6565166660105 is 5010666615656.

It is a happy number.

It is not a de Polignac number, because 6565166660105 - 2⁴ = 6565166660089 is a prime.

It is a super-2 number, since 2×6565166660105² (a number of 26 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5923586 + ... + 6944004.

It is an arithmetic number, because the mean of its divisors is an integer number (509378357700).

Almost surely, 2^{6565166660105} is an apocalyptic number.

It is an amenable number.

6565166660105 is a deficient number, since it is larger than the sum of its proper divisors (1584887063095).

6565166660105 is a wasteful number, since it uses less digits than its factorization.

6565166660105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1064824.

The product of its (nonzero) digits is 5832000, while the sum is 53.

The spelling of 6565166660105 in words is "six trillion, five hundred sixty-five billion, one hundred sixty-six million, six hundred sixty thousand, one hundred five".