10605506665 has 32 divisors (see below), whose sum is σ = 13948919712. Its totient is φ = 7693056000.

The previous prime is 10605506641. The next prime is 10605506677. The reversal of 10605506665 is 56660550601.

It can be written as a sum of positive squares in 16 ways, for example, as 9607136256 + 998370409 = 98016^2 + 31597^2 .

It is not a de Polignac number, because 10605506665 - 2⁷ = 10605506537 is a prime.

It is a super-2 number, since 2×10605506665² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4205605 + ... + 4208125.

It is an arithmetic number, because the mean of its divisors is an integer number (435903741).

Almost surely, 2^10605506665 is an apocalyptic number.

It is an amenable number.

10605506665 is a deficient number, since it is larger than the sum of its proper divisors (3343413047).

10605506665 is a wasteful number, since it uses less digits than its factorization.

10605506665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3661.

The product of its (nonzero) digits is 162000, while the sum is 40.

The spelling of 10605506665 in words is "ten billion, six hundred five million, five hundred six thousand, six hundred sixty-five".