84758442089 has 2 divisors, whose sum is σ = 84758442090. Its totient is φ = 84758442088.

The previous prime is 84758442031. The next prime is 84758442151. The reversal of 84758442089 is 98024485748.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69334789225 + 15423652864 = 263315^2 + 124192^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84758442089 is a prime.

It is not a weakly prime, because it can be changed into another prime (84758442689) 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, 42379221044 + 42379221045.

It is an arithmetic number, because the mean of its divisors is an integer number (42379221045).

Almost surely, 2^84758442089 is an apocalyptic number.

It is an amenable number.

84758442089 is a deficient number, since it is larger than the sum of its proper divisors (1).

84758442089 is an equidigital number, since it uses as much as digits as its factorization.

84758442089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20643840, while the sum is 59.

The spelling of 84758442089 in words is "eighty-four billion, seven hundred fifty-eight million, four hundred forty-two thousand, eighty-nine".