845794343497529 has 2 divisors, whose sum is σ = 845794343497530. Its totient is φ = 845794343497528.

The previous prime is 845794343497517. The next prime is 845794343497567. The reversal of 845794343497529 is 925794343497548.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 825635572515625 + 20158770981904 = 28733875^2 + 4489852^2 .

It is a cyclic number.

It is not a de Polignac number, because 845794343497529 - 2⁸ = 845794343497273 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 (845794343697529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 422897171748764 + 422897171748765.

It is an arithmetic number, because the mean of its divisors is an integer number (422897171748765).

Almost surely, 2^{845794343497529} is an apocalyptic number.

It is an amenable number.

845794343497529 is a deficient number, since it is larger than the sum of its proper divisors (1).

845794343497529 is an equidigital number, since it uses as much as digits as its factorization.

845794343497529 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32920473600, while the sum is 83.

The spelling of 845794343497529 in words is "eight hundred forty-five trillion, seven hundred ninety-four billion, three hundred forty-three million, four hundred ninety-seven thousand, five hundred twenty-nine".