423076856819 has 2 divisors, whose sum is σ = 423076856820. Its totient is φ = 423076856818.

The previous prime is 423076856803. The next prime is 423076856849. The reversal of 423076856819 is 918658670324.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 423076856819 - 2⁴ = 423076856803 is a prime.

It is a super-2 number, since 2×423076856819² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (423076856849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211538428409 + 211538428410.

It is an arithmetic number, because the mean of its divisors is an integer number (211538428410).

It is a 1-persistent number, because it is pandigital, but 2⋅423076856819 = 846153713638 is not.

Almost surely, 2^423076856819 is an apocalyptic number.

423076856819 is a deficient number, since it is larger than the sum of its proper divisors (1).

423076856819 is an equidigital number, since it uses as much as digits as its factorization.

423076856819 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17418240, while the sum is 59.

The spelling of 423076856819 in words is "four hundred twenty-three billion, seventy-six million, eight hundred fifty-six thousand, eight hundred nineteen".