16170549016217 has 4 divisors (see below), whose sum is σ = 16170652083300. Its totient is φ = 16170445949136.

The previous prime is 16170549016201. The next prime is 16170549016231. The reversal of 16170549016217 is 71261094507161.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5322853451161 + 10847695565056 = 2307131^2 + 3293584^2 .

It is a cyclic number.

It is not a de Polignac number, because 16170549016217 - 2⁴ = 16170549016201 is a prime.

It is a super-2 number, since 2×16170549016217² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16170549016247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51297842 + ... + 51612107.

It is an arithmetic number, because the mean of its divisors is an integer number (4042663020825).

Almost surely, 2^{16170549016217} is an apocalyptic number.

It is an amenable number.

16170549016217 is a deficient number, since it is larger than the sum of its proper divisors (103067083).

16170549016217 is a wasteful number, since it uses less digits than its factorization.

16170549016217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103067082.

The product of its (nonzero) digits is 635040, while the sum is 50.

The spelling of 16170549016217 in words is "sixteen trillion, one hundred seventy billion, five hundred forty-nine million, sixteen thousand, two hundred seventeen".