16678136805439 has 2 divisors, whose sum is σ = 16678136805440. Its totient is φ = 16678136805438.

The previous prime is 16678136805353. The next prime is 16678136805467. The reversal of 16678136805439 is 93450863187661.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16678136805439 - 2¹⁹ = 16678136281151 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16678136805739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8339068402719 + 8339068402720.

It is an arithmetic number, because the mean of its divisors is an integer number (8339068402720).

Almost surely, 2^{16678136805439} is an apocalyptic number.

16678136805439 is a deficient number, since it is larger than the sum of its proper divisors (1).

16678136805439 is an equidigital number, since it uses as much as digits as its factorization.

16678136805439 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 156764160, while the sum is 67.

The spelling of 16678136805439 in words is "sixteen trillion, six hundred seventy-eight billion, one hundred thirty-six million, eight hundred five thousand, four hundred thirty-nine".