1105555601665 has 8 divisors (see below), whose sum is σ = 1384347883968. Its totient is φ = 845990373360.

The previous prime is 1105555601639. The next prime is 1105555601729. The reversal of 1105555601665 is 5661065555011.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-1105555601665 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4806763371 + ... + 4806763600.

It is an arithmetic number, because the mean of its divisors is an integer number (173043485496).

Almost surely, 2^{1105555601665} is an apocalyptic number.

It is an amenable number.

1105555601665 is a deficient number, since it is larger than the sum of its proper divisors (278792282303).

1105555601665 is an equidigital number, since it uses as much as digits as its factorization.

1105555601665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9613526999.

The product of its (nonzero) digits is 675000, while the sum is 46.

The spelling of 1105555601665 in words is "one trillion, one hundred five billion, five hundred fifty-five million, six hundred one thousand, six hundred sixty-five".