10566661065 has 16 divisors (see below), whose sum is σ = 16945894656. Its totient is φ = 5622473600.

The previous prime is 10566661057. The next prime is 10566661073. The reversal of 10566661065 is 56016666501.

It is an interprime number because it is at equal distance from previous prime (10566661057) and next prime (10566661073).

It is not a de Polignac number, because 10566661065 - 2³ = 10566661057 is a prime.

It is a super-3 number, since 3×10566661065³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 810756 + ... + 823685.

It is an arithmetic number, because the mean of its divisors is an integer number (1059118416).

Almost surely, 2^10566661065 is an apocalyptic number.

10566661065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

10566661065 is a deficient number, since it is larger than the sum of its proper divisors (6379233591).

10566661065 is a wasteful number, since it uses less digits than its factorization.

10566661065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1634880.

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

The spelling of 10566661065 in words is "ten billion, five hundred sixty-six million, six hundred sixty-one thousand, sixty-five".