16778849179 has 2 divisors, whose sum is σ = 16778849180. Its totient is φ = 16778849178.

The previous prime is 16778849111. The next prime is 16778849237. The reversal of 16778849179 is 97194887761.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16778849179 - 2⁷ = 16778849051 is a prime.

It is not a weakly prime, because it can be changed into another prime (16778846179) 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 as a sum of consecutive naturals, namely, 8389424589 + 8389424590.

It is an arithmetic number, because the mean of its divisors is an integer number (8389424590).

Almost surely, 2^16778849179 is an apocalyptic number.

16778849179 is a deficient number, since it is larger than the sum of its proper divisors (1).

16778849179 is an equidigital number, since it uses as much as digits as its factorization.

16778849179 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 42674688, while the sum is 67.

The spelling of 16778849179 in words is "sixteen billion, seven hundred seventy-eight million, eight hundred forty-nine thousand, one hundred seventy-nine".