11665617217201 has 8 divisors (see below), whose sum is σ = 11669852028384. Its totient is φ = 11661383078400.

The previous prime is 11665617217183. The next prime is 11665617217213. The reversal of 11665617217201 is 10271271656611.

11665617217201 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 11665617217201 - 2¹⁷ = 11665617086129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11665617247201) 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, 35932401 + ... + 36255601.

It is an arithmetic number, because the mean of its divisors is an integer number (1458731503548).

Almost surely, 2^{11665617217201} is an apocalyptic number.

It is an amenable number.

11665617217201 is a deficient number, since it is larger than the sum of its proper divisors (4234811183).

11665617217201 is an equidigital number, since it uses as much as digits as its factorization.

11665617217201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336191.

The product of its (nonzero) digits is 211680, while the sum is 46.

The spelling of 11665617217201 in words is "eleven trillion, six hundred sixty-five billion, six hundred seventeen million, two hundred seventeen thousand, two hundred one".