16809534877 has 2 divisors, whose sum is σ = 16809534878. Its totient is φ = 16809534876.

The previous prime is 16809534869. The next prime is 16809534883. The reversal of 16809534877 is 77843590861.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16751866041 + 57668836 = 129429^2 + 7594^2 .

It is a cyclic number.

It is not a de Polignac number, because 16809534877 - 2³ = 16809534869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16809534827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8404767438 + 8404767439.

It is an arithmetic number, because the mean of its divisors is an integer number (8404767439).

Almost surely, 2^16809534877 is an apocalyptic number.

It is an amenable number.

16809534877 is a deficient number, since it is larger than the sum of its proper divisors (1).

16809534877 is an equidigital number, since it uses as much as digits as its factorization.

16809534877 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10160640, while the sum is 58.

The spelling of 16809534877 in words is "sixteen billion, eight hundred nine million, five hundred thirty-four thousand, eight hundred seventy-seven".