16853520017 has 4 divisors (see below), whose sum is σ = 17309020596. Its totient is φ = 16398019440.

The previous prime is 16853519999. The next prime is 16853520037. The reversal of 16853520017 is 71002535861.

16853520017 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 7391872576 + 9461647441 = 85976^2 + 97271^2 .

It is a cyclic number.

It is not a de Polignac number, because 16853520017 - 2²⁴ = 16836742801 is a prime.

It is a super-2 number, since 2×16853520017² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16853520037) 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 3 ways as a sum of consecutive naturals, for example, 227750234 + ... + 227750307.

It is an arithmetic number, because the mean of its divisors is an integer number (4327255149).

Almost surely, 2^16853520017 is an apocalyptic number.

It is an amenable number.

16853520017 is a deficient number, since it is larger than the sum of its proper divisors (455500579).

16853520017 is an equidigital number, since it uses as much as digits as its factorization.

16853520017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455500578.

The product of its (nonzero) digits is 50400, while the sum is 38.

The spelling of 16853520017 in words is "sixteen billion, eight hundred fifty-three million, five hundred twenty thousand, seventeen".