16705856983 has 4 divisors (see below), whose sum is σ = 16955198200. Its totient is φ = 16456515768.

The previous prime is 16705856953. The next prime is 16705857017. The reversal of 16705856983 is 38965850761.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 38965850761 = 6521 ⋅5975441.

It is a cyclic number.

It is not a de Polignac number, because 16705856983 - 2¹³ = 16705848791 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16705856953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 124670508 + ... + 124670641.

It is an arithmetic number, because the mean of its divisors is an integer number (4238799550).

Almost surely, 2^16705856983 is an apocalyptic number.

16705856983 is a deficient number, since it is larger than the sum of its proper divisors (249341217).

16705856983 is an equidigital number, since it uses as much as digits as its factorization.

16705856983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249341216.

The product of its (nonzero) digits is 10886400, while the sum is 58.

The spelling of 16705856983 in words is "sixteen billion, seven hundred five million, eight hundred fifty-six thousand, nine hundred eighty-three".