423243322423393 has 2 divisors, whose sum is σ = 423243322423394. Its totient is φ = 423243322423392.

The previous prime is 423243322423379. The next prime is 423243322423409. The reversal of 423243322423393 is 393324223342324.

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., 256301624792929 + 166941697630464 = 16009423^2 + 12920592^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-423243322423393 is a prime.

It is not a weakly prime, because it can be changed into another prime (423243322423693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211621661211696 + 211621661211697.

It is an arithmetic number, because the mean of its divisors is an integer number (211621661211697).

Almost surely, 2^{423243322423393} is an apocalyptic number.

It is an amenable number.

423243322423393 is a deficient number, since it is larger than the sum of its proper divisors (1).

423243322423393 is an equidigital number, since it uses as much as digits as its factorization.

423243322423393 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13436928, while the sum is 49.

The spelling of 423243322423393 in words is "four hundred twenty-three trillion, two hundred forty-three billion, three hundred twenty-two million, four hundred twenty-three thousand, three hundred ninety-three".