1117170665565 has 16 divisors (see below), whose sum is σ = 1797805283328. Its totient is φ = 592380282176.

The previous prime is 1117170665561. The next prime is 1117170665581. The reversal of 1117170665565 is 5655660717111.

It is a cyclic number.

It is not a de Polignac number, because 1117170665565 - 2² = 1117170665561 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1117170665561) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 215251869 + ... + 215257058.

It is an arithmetic number, because the mean of its divisors is an integer number (112362830208).

Almost surely, 2^{1117170665565} is an apocalyptic number.

1117170665565 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1117170665565 is a deficient number, since it is larger than the sum of its proper divisors (680634617763).

1117170665565 is a wasteful number, since it uses less digits than its factorization.

1117170665565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430509108.

The product of its (nonzero) digits is 1323000, while the sum is 51.

The spelling of 1117170665565 in words is "one trillion, one hundred seventeen billion, one hundred seventy million, six hundred sixty-five thousand, five hundred sixty-five".