16773963889 has 4 divisors (see below), whose sum is σ = 16774350580. Its totient is φ = 16773577200.

The previous prime is 16773963883. The next prime is 16773963961. The reversal of 16773963889 is 98836937761.

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 2587248225 + 14186715664 = 50865^2 + 119108^2 .

It is a cyclic number.

It is not a de Polignac number, because 16773963889 - 2⁷ = 16773963761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16773963883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 118662 + ... + 218239.

It is an arithmetic number, because the mean of its divisors is an integer number (4193587645).

Almost surely, 2^16773963889 is an apocalyptic number.

It is an amenable number.

16773963889 is a deficient number, since it is larger than the sum of its proper divisors (386691).

16773963889 is an equidigital number, since it uses as much as digits as its factorization.

16773963889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386690.

The product of its digits is 82301184, while the sum is 67.

The spelling of 16773963889 in words is "sixteen billion, seven hundred seventy-three million, nine hundred sixty-three thousand, eight hundred eighty-nine".