322478846489 has 2 divisors, whose sum is σ = 322478846490. Its totient is φ = 322478846488.

The previous prime is 322478846429. The next prime is 322478846507. The reversal of 322478846489 is 984648874223.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 319219350025 + 3259496464 = 564995^2 + 57092^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-322478846489 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 (322478846429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 161239423244 + 161239423245.

It is an arithmetic number, because the mean of its divisors is an integer number (161239423245).

Almost surely, 2^322478846489 is an apocalyptic number.

It is an amenable number.

322478846489 is a deficient number, since it is larger than the sum of its proper divisors (1).

322478846489 is an equidigital number, since it uses as much as digits as its factorization.

322478846489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 148635648, while the sum is 65.

The spelling of 322478846489 in words is "three hundred twenty-two billion, four hundred seventy-eight million, eight hundred forty-six thousand, four hundred eighty-nine".