854570824889 has 2 divisors, whose sum is σ = 854570824890. Its totient is φ = 854570824888.

The previous prime is 854570824873. The next prime is 854570824907. The reversal of 854570824889 is 988428075458.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 779229907600 + 75340917289 = 882740^2 + 274483^2 .

It is a cyclic number.

It is not a de Polignac number, because 854570824889 - 2⁴ = 854570824873 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 (854570824829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 427285412444 + 427285412445.

It is an arithmetic number, because the mean of its divisors is an integer number (427285412445).

Almost surely, 2^854570824889 is an apocalyptic number.

It is an amenable number.

854570824889 is a deficient number, since it is larger than the sum of its proper divisors (1).

854570824889 is an equidigital number, since it uses as much as digits as its factorization.

854570824889 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 206438400, while the sum is 68.

The spelling of 854570824889 in words is "eight hundred fifty-four billion, five hundred seventy million, eight hundred twenty-four thousand, eight hundred eighty-nine".