16321300777 has 4 divisors (see below), whose sum is σ = 16321557460. Its totient is φ = 16321044096.

The previous prime is 16321300757. The next prime is 16321300811. The reversal of 16321300777 is 77700312361.

16321300777 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, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 12891558681 + 3429742096 = 113541^2 + 58564^2 .

It is a cyclic number.

It is not a de Polignac number, because 16321300777 - 2¹⁹ = 16320776489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16321300757) 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, 45793 + ... + 186385.

It is an arithmetic number, because the mean of its divisors is an integer number (4080389365).

Almost surely, 2^16321300777 is an apocalyptic number.

It is an amenable number.

16321300777 is a deficient number, since it is larger than the sum of its proper divisors (256683).

16321300777 is a wasteful number, since it uses less digits than its factorization.

16321300777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256682.

The product of its (nonzero) digits is 37044, while the sum is 37.

The spelling of 16321300777 in words is "sixteen billion, three hundred twenty-one million, three hundred thousand, seven hundred seventy-seven".