8646109516673 has 2 divisors, whose sum is σ = 8646109516674. Its totient is φ = 8646109516672.

The previous prime is 8646109516657. The next prime is 8646109516703. The reversal of 8646109516673 is 3766159016468.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7001067278209 + 1645042238464 = 2645953^2 + 1282592^2 .

It is a cyclic number.

It is not a de Polignac number, because 8646109516673 - 2⁴ = 8646109516657 is a prime.

It is not a weakly prime, because it can be changed into another prime (8646109516273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4323054758336 + 4323054758337.

It is an arithmetic number, because the mean of its divisors is an integer number (4323054758337).

Almost surely, 2^{8646109516673} is an apocalyptic number.

It is an amenable number.

8646109516673 is a deficient number, since it is larger than the sum of its proper divisors (1).

8646109516673 is an equidigital number, since it uses as much as digits as its factorization.

8646109516673 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 39191040, while the sum is 62.

The spelling of 8646109516673 in words is "eight trillion, six hundred forty-six billion, one hundred nine million, five hundred sixteen thousand, six hundred seventy-three".