16773947677 has 2 divisors, whose sum is σ = 16773947678. Its totient is φ = 16773947676.

The previous prime is 16773947639. The next prime is 16773947713. The reversal of 16773947677 is 77674937761.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15398576281 + 1375371396 = 124091^2 + 37086^2 .

It is a cyclic number.

It is not a de Polignac number, because 16773947677 - 2²⁷ = 16639729949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16773947627) 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, 8386973838 + 8386973839.

It is an arithmetic number, because the mean of its divisors is an integer number (8386973839).

Almost surely, 2^16773947677 is an apocalyptic number.

It is an amenable number.

16773947677 is a deficient number, since it is larger than the sum of its proper divisors (1).

16773947677 is an equidigital number, since it uses as much as digits as its factorization.

16773947677 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 65345616, while the sum is 64.

The spelling of 16773947677 in words is "sixteen billion, seven hundred seventy-three million, nine hundred forty-seven thousand, six hundred seventy-seven".