845258422171 has 2 divisors, whose sum is σ = 845258422172. Its totient is φ = 845258422170.

The previous prime is 845258422139. The next prime is 845258422207. The reversal of 845258422171 is 171224852548.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 845258422171 - 2⁵ = 845258422139 is a prime.

It is not a weakly prime, because it can be changed into another prime (845258432171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 422629211085 + 422629211086.

It is an arithmetic number, because the mean of its divisors is an integer number (422629211086).

Almost surely, 2^845258422171 is an apocalyptic number.

845258422171 is a deficient number, since it is larger than the sum of its proper divisors (1).

845258422171 is an equidigital number, since it uses as much as digits as its factorization.

845258422171 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1433600, while the sum is 49.

The spelling of 845258422171 in words is "eight hundred forty-five billion, two hundred fifty-eight million, four hundred twenty-two thousand, one hundred seventy-one".