10555665665 has 8 divisors (see below), whose sum is σ = 12809122920. Its totient is φ = 8349649792.

The previous prime is 10555665647. The next prime is 10555665689. The reversal of 10555665665 is 56656655501.

It can be written as a sum of positive squares in 4 ways, for example, as 22543504 + 10533122161 = 4748^2 + 102631^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10555665665 - 2¹² = 10555661569 is a prime.

It is a super-2 number, since 2×10555665665² (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 7 ways as a sum of consecutive naturals, for example, 11859854 + ... + 11860743.

It is an arithmetic number, because the mean of its divisors is an integer number (1601140365).

Almost surely, 2^10555665665 is an apocalyptic number.

It is an amenable number.

10555665665 is a deficient number, since it is larger than the sum of its proper divisors (2253457255).

10555665665 is an equidigital number, since it uses as much as digits as its factorization.

10555665665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23720691.

The product of its (nonzero) digits is 4050000, while the sum is 50.

The spelling of 10555665665 in words is "ten billion, five hundred fifty-five million, six hundred sixty-five thousand, six hundred sixty-five".