42846847608689 has 2 divisors, whose sum is σ = 42846847608690. Its totient is φ = 42846847608688.

The previous prime is 42846847608571. The next prime is 42846847608713. The reversal of 42846847608689 is 98680674864824.

42846847608689 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42653438521600 + 193409087089 = 6530960^2 + 439783^2 .

It is a cyclic number.

It is not a de Polignac number, because 42846847608689 - 2³² = 42842552641393 is a prime.

It is not a weakly prime, because it can be changed into another prime (42846847608889) 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, 21423423804344 + 21423423804345.

It is an arithmetic number, because the mean of its divisors is an integer number (21423423804345).

Almost surely, 2^{42846847608689} is an apocalyptic number.

It is an amenable number.

42846847608689 is a deficient number, since it is larger than the sum of its proper divisors (1).

42846847608689 is an equidigital number, since it uses as much as digits as its factorization.

42846847608689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7134511104, while the sum is 80.

The spelling of 42846847608689 in words is "forty-two trillion, eight hundred forty-six billion, eight hundred forty-seven million, six hundred eight thousand, six hundred eighty-nine".