423436128767 has 2 divisors, whose sum is σ = 423436128768. Its totient is φ = 423436128766.

The previous prime is 423436128749. The next prime is 423436128803. The reversal of 423436128767 is 767821634324.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-423436128767 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (423436128067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211718064383 + 211718064384.

It is an arithmetic number, because the mean of its divisors is an integer number (211718064384).

Almost surely, 2^423436128767 is an apocalyptic number.

423436128767 is a deficient number, since it is larger than the sum of its proper divisors (1).

423436128767 is an equidigital number, since it uses as much as digits as its factorization.

423436128767 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8128512, while the sum is 53.

The spelling of 423436128767 in words is "four hundred twenty-three billion, four hundred thirty-six million, one hundred twenty-eight thousand, seven hundred sixty-seven".