16685776339 has 2 divisors, whose sum is σ = 16685776340. Its totient is φ = 16685776338.

The previous prime is 16685776321. The next prime is 16685776411. The reversal of 16685776339 is 93367758661.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16685776339 - 2¹¹ = 16685774291 is a prime.

It is not a weakly prime, because it can be changed into another prime (16685776439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8342888169 + 8342888170.

It is an arithmetic number, because the mean of its divisors is an integer number (8342888170).

Almost surely, 2^16685776339 is an apocalyptic number.

16685776339 is a deficient number, since it is larger than the sum of its proper divisors (1).

16685776339 is an equidigital number, since it uses as much as digits as its factorization.

16685776339 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34292160, while the sum is 61.

The spelling of 16685776339 in words is "sixteen billion, six hundred eighty-five million, seven hundred seventy-six thousand, three hundred thirty-nine".