16336991378 has 4 divisors (see below), whose sum is σ = 24505487070. Its totient is φ = 8168495688.

The previous prime is 16336991257. The next prime is 16336991393. The reversal of 16336991378 is 87319963361.

It is a happy number.

16336991378 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.

It can be written as a sum of positive squares in only one way, i.e., 9948666049 + 6388325329 = 99743^2 + 79927^2 .

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 as a sum of consecutive naturals, namely, 4084247843 + ... + 4084247846.

Almost surely, 2^16336991378 is an apocalyptic number.

16336991378 is a deficient number, since it is larger than the sum of its proper divisors (8168495692).

16336991378 is an equidigital number, since it uses as much as digits as its factorization.

16336991378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8168495691.

The product of its digits is 4408992, while the sum is 56.

The spelling of 16336991378 in words is "sixteen billion, three hundred thirty-six million, nine hundred ninety-one thousand, three hundred seventy-eight".