16778849188 has 6 divisors (see below), whose sum is σ = 29362986086. Its totient is φ = 8389424592.

The previous prime is 16778849179. The next prime is 16778849237. The reversal of 16778849188 is 88194887761.

16778849188 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 only one way, i.e., 15850306404 + 928542784 = 125898^2 + 30472^2 .

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, 2097356145 + ... + 2097356152.

Almost surely, 2^16778849188 is an apocalyptic number.

It is an amenable number.

16778849188 is a deficient number, since it is larger than the sum of its proper divisors (12584136898).

16778849188 is a wasteful number, since it uses less digits than its factorization.

16778849188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4194712301 (or 4194712299 counting only the distinct ones).

The product of its digits is 43352064, while the sum is 67.

The spelling of 16778849188 in words is "sixteen billion, seven hundred seventy-eight million, eight hundred forty-nine thousand, one hundred eighty-eight".