117665546809 has 4 divisors (see below), whose sum is σ = 117666910720. Its totient is φ = 117664182900.

The previous prime is 117665546771. The next prime is 117665546819. The reversal of 117665546809 is 908645566711.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 908645566711 = 468353 ⋅1940087.

It is a cyclic number.

It is not a de Polignac number, because 117665546809 - 2²⁹ = 117128675897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (117665546819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 543129 + ... + 728230.

It is an arithmetic number, because the mean of its divisors is an integer number (29416727680).

Almost surely, 2^117665546809 is an apocalyptic number.

It is an amenable number.

117665546809 is a deficient number, since it is larger than the sum of its proper divisors (1363911).

117665546809 is an equidigital number, since it uses as much as digits as its factorization.

117665546809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1363910.

The product of its (nonzero) digits is 10886400, while the sum is 58.

The spelling of 117665546809 in words is "one hundred seventeen billion, six hundred sixty-five million, five hundred forty-six thousand, eight hundred nine".