10665516555665 has 8 divisors (see below), whose sum is σ = 12865628348928. Its totient is φ = 8487740923120.

The previous prime is 10665516555653. The next prime is 10665516555667. The reversal of 10665516555665 is 56655561556601.

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

It is not a de Polignac number, because 10665516555665 - 2⁶ = 10665516555601 is a prime.

It is a super-2 number, since 2×10665516555665² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10665516555598 and 10665516555607.

It is not an unprimeable number, because it can be changed into a prime (10665516555667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5584039127 + ... + 5584041036.

It is an arithmetic number, because the mean of its divisors is an integer number (1608203543616).

Almost surely, 2^{10665516555665} is an apocalyptic number.

It is an amenable number.

10665516555665 is a deficient number, since it is larger than the sum of its proper divisors (2200111793263).

10665516555665 is a wasteful number, since it uses less digits than its factorization.

10665516555665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11168080359.

The product of its (nonzero) digits is 121500000, while the sum is 62.

The spelling of 10665516555665 in words is "ten trillion, six hundred sixty-five billion, five hundred sixteen million, five hundred fifty-five thousand, six hundred sixty-five".