42804388673 has 2 divisors, whose sum is σ = 42804388674. Its totient is φ = 42804388672.

The previous prime is 42804388651. The next prime is 42804388771. The reversal of 42804388673 is 37688340824.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32604802624 + 10199586049 = 180568^2 + 100993^2 .

It is a cyclic number.

It is not a de Polignac number, because 42804388673 - 2⁶ = 42804388609 is a prime.

It is not a weakly prime, because it can be changed into another prime (42804388603) 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, 21402194336 + 21402194337.

It is an arithmetic number, because the mean of its divisors is an integer number (21402194337).

Almost surely, 2^42804388673 is an apocalyptic number.

It is an amenable number.

42804388673 is a deficient number, since it is larger than the sum of its proper divisors (1).

42804388673 is an equidigital number, since it uses as much as digits as its factorization.

42804388673 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6193152, while the sum is 53.

The spelling of 42804388673 in words is "forty-two billion, eight hundred four million, three hundred eighty-eight thousand, six hundred seventy-three".