116565550065 has 20 divisors (see below), whose sum is σ = 208954542324. Its totient is φ = 62168293152.

The previous prime is 116565549979. The next prime is 116565550099. The reversal of 116565550065 is 560055565611.

It can be written as a sum of positive squares in 2 ways, for example, as 34263120609 + 82302429456 = 185103^2 + 286884^2 .

It is not a de Polignac number, because 116565550065 - 2⁷ = 116565549937 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 116565550065.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 143907682 + ... + 143908491.

Almost surely, 2^116565550065 is an apocalyptic number.

116565550065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

116565550065 is a deficient number, since it is larger than the sum of its proper divisors (92388992259).

116565550065 is an equidigital number, since it uses as much as digits as its factorization.

116565550065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287816190 (or 287816181 counting only the distinct ones).

The product of its (nonzero) digits is 675000, while the sum is 45.

The spelling of 116565550065 in words is "one hundred sixteen billion, five hundred sixty-five million, five hundred fifty thousand, sixty-five".