842543750089 has 2 divisors, whose sum is σ = 842543750090. Its totient is φ = 842543750088.

The previous prime is 842543750047. The next prime is 842543750123. The reversal of 842543750089 is 980057345248.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 694568894464 + 147974855625 = 833408^2 + 384675^2 .

It is a cyclic number.

It is not a de Polignac number, because 842543750089 - 2⁹ = 842543749577 is a prime.

It is not a weakly prime, because it can be changed into another prime (842543754089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 421271875044 + 421271875045.

It is an arithmetic number, because the mean of its divisors is an integer number (421271875045).

Almost surely, 2^842543750089 is an apocalyptic number.

It is an amenable number.

842543750089 is a deficient number, since it is larger than the sum of its proper divisors (1).

842543750089 is an equidigital number, since it uses as much as digits as its factorization.

842543750089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9676800, while the sum is 55.

The spelling of 842543750089 in words is "eight hundred forty-two billion, five hundred forty-three million, seven hundred fifty thousand, eighty-nine".