16277855809 has 2 divisors, whose sum is σ = 16277855810. Its totient is φ = 16277855808.

The previous prime is 16277855767. The next prime is 16277855819. The reversal of 16277855809 is 90855877261.

16277855809 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9492215184 + 6785640625 = 97428^2 + 82375^2 .

It is a cyclic number.

It is not a de Polignac number, because 16277855809 - 2²⁵ = 16244301377 is a prime.

It is not a weakly prime, because it can be changed into another prime (16277855819) by changing a digit.

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, 8138927904 + 8138927905.

It is an arithmetic number, because the mean of its divisors is an integer number (8138927905).

Almost surely, 2^16277855809 is an apocalyptic number.

It is an amenable number.

16277855809 is a deficient number, since it is larger than the sum of its proper divisors (1).

16277855809 is an equidigital number, since it uses as much as digits as its factorization.

16277855809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8467200, while the sum is 58.

The spelling of 16277855809 in words is "sixteen billion, two hundred seventy-seven million, eight hundred fifty-five thousand, eight hundred nine".