16853518517 has 6 divisors (see below), whose sum is σ = 18524941974. Its totient is φ = 15321380360.

The previous prime is 16853518511. The next prime is 16853518523. The reversal of 16853518517 is 71581535861.

16853518517 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (16853518511) and next prime (16853518523).

It can be written as a sum of positive squares in only one way, i.e., 11091038596 + 5762479921 = 105314^2 + 75911^2 .

It is a de Polignac number, because none of the positive numbers 2^k-16853518517 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16853518511) 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 5 ways as a sum of consecutive naturals, for example, 69642518 + ... + 69642759.

It is an arithmetic number, because the mean of its divisors is an integer number (3087490329).

Almost surely, 2^16853518517 is an apocalyptic number.

It is an amenable number.

16853518517 is a deficient number, since it is larger than the sum of its proper divisors (1671423457).

16853518517 is a wasteful number, since it uses less digits than its factorization.

16853518517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139285299 (or 139285288 counting only the distinct ones).

The product of its digits is 1008000, while the sum is 50.

The spelling of 16853518517 in words is "sixteen billion, eight hundred fifty-three million, five hundred eighteen thousand, five hundred seventeen".