423213545563 has 2 divisors, whose sum is σ = 423213545564. Its totient is φ = 423213545562.

The previous prime is 423213545543. The next prime is 423213545593. The reversal of 423213545563 is 365545312324.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 423213545563 - 2²⁵ = 423179991131 is a prime.

It is not a weakly prime, because it can be changed into another prime (423213545533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211606772781 + 211606772782.

It is an arithmetic number, because the mean of its divisors is an integer number (211606772782).

Almost surely, 2^423213545563 is an apocalyptic number.

423213545563 is a deficient number, since it is larger than the sum of its proper divisors (1).

423213545563 is an equidigital number, since it uses as much as digits as its factorization.

423213545563 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1296000, while the sum is 43.

Adding to 423213545563 its reverse (365545312324), we get a palindrome (788758857887).

The spelling of 423213545563 in words is "four hundred twenty-three billion, two hundred thirteen million, five hundred forty-five thousand, five hundred sixty-three".