8400786195089 has 2 divisors, whose sum is σ = 8400786195090. Its totient is φ = 8400786195088.

The previous prime is 8400786195083. The next prime is 8400786195121. The reversal of 8400786195089 is 9805916870048.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6600917100625 + 1799869094464 = 2569225^2 + 1341592^2 .

It is a cyclic number.

It is not a de Polignac number, because 8400786195089 - 2⁴ = 8400786195073 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (8400786195083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4200393097544 + 4200393097545.

It is an arithmetic number, because the mean of its divisors is an integer number (4200393097545).

Almost surely, 2^{8400786195089} is an apocalyptic number.

It is an amenable number.

8400786195089 is a deficient number, since it is larger than the sum of its proper divisors (1).

8400786195089 is an equidigital number, since it uses as much as digits as its factorization.

8400786195089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34836480, while the sum is 65.

The spelling of 8400786195089 in words is "eight trillion, four hundred billion, seven hundred eighty-six million, one hundred ninety-five thousand, eighty-nine".