16321300778 has 8 divisors (see below), whose sum is σ = 24757029540. Its totient is φ = 8068957600.

The previous prime is 16321300757. The next prime is 16321300811. The reversal of 16321300778 is 87700312361.

16321300778 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 13678004209 + 2643296569 = 116953^2 + 51413^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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, 45846173 + ... + 45846528.

Almost surely, 2^16321300778 is an apocalyptic number.

16321300778 is a deficient number, since it is larger than the sum of its proper divisors (8435728762).

16321300778 is an equidigital number, since it uses as much as digits as its factorization.

16321300778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91692792.

The product of its (nonzero) digits is 42336, while the sum is 38.

The spelling of 16321300778 in words is "sixteen billion, three hundred twenty-one million, three hundred thousand, seven hundred seventy-eight".