8774809806689 has 2 divisors, whose sum is σ = 8774809806690. Its totient is φ = 8774809806688.

The previous prime is 8774809806683. The next prime is 8774809806701. The reversal of 8774809806689 is 9866089084778.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7355811865600 + 1418997941089 = 2712160^2 + 1191217^2 .

It is a cyclic number.

It is not a de Polignac number, because 8774809806689 - 2³² = 8770514839393 is a prime.

It is not a weakly prime, because it can be changed into another prime (8774809806683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4387404903344 + 4387404903345.

It is an arithmetic number, because the mean of its divisors is an integer number (4387404903345).

Almost surely, 2^{8774809806689} is an apocalyptic number.

It is an amenable number.

8774809806689 is a deficient number, since it is larger than the sum of its proper divisors (1).

8774809806689 is an equidigital number, since it uses as much as digits as its factorization.

8774809806689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2341011456, while the sum is 80.

The spelling of 8774809806689 in words is "eight trillion, seven hundred seventy-four billion, eight hundred nine million, eight hundred six thousand, six hundred eighty-nine".