10665165065 has 4 divisors (see below), whose sum is σ = 12798198084. Its totient is φ = 8532132048.

The previous prime is 10665165053. The next prime is 10665165079. The reversal of 10665165065 is 56056156601.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56056156601 = 47 ⋅1192684183.

It can be written as a sum of positive squares in 2 ways, for example, as 7145828089 + 3519336976 = 84533^2 + 59324^2 .

It is a cyclic number.

It is not a de Polignac number, because 10665165065 - 2⁶ = 10665165001 is a prime.

It is a super-2 number, since 2×10665165065² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1066516502 + ... + 1066516511.

It is an arithmetic number, because the mean of its divisors is an integer number (3199549521).

Almost surely, 2^10665165065 is an apocalyptic number.

It is an amenable number.

10665165065 is a deficient number, since it is larger than the sum of its proper divisors (2133033019).

10665165065 is an equidigital number, since it uses as much as digits as its factorization.

10665165065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2133033018.

The product of its (nonzero) digits is 162000, while the sum is 41.

The spelling of 10665165065 in words is "ten billion, six hundred sixty-five million, one hundred sixty-five thousand, sixty-five".