423429768991 has 2 divisors, whose sum is σ = 423429768992. Its totient is φ = 423429768990.

The previous prime is 423429768989. The next prime is 423429769001. The reversal of 423429768991 is 199867924324.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 423429768991 - 2¹ = 423429768989 is a prime.

Together with 423429768989, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (423429768791) 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, 211714884495 + 211714884496.

It is an arithmetic number, because the mean of its divisors is an integer number (211714884496).

Almost surely, 2^423429768991 is an apocalyptic number.

423429768991 is a deficient number, since it is larger than the sum of its proper divisors (1).

423429768991 is an equidigital number, since it uses as much as digits as its factorization.

423429768991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 47029248, while the sum is 64.

The spelling of 423429768991 in words is "four hundred twenty-three billion, four hundred twenty-nine million, seven hundred sixty-eight thousand, nine hundred ninety-one".