423373462364081 has 2 divisors, whose sum is σ = 423373462364082. Its totient is φ = 423373462364080.

The previous prime is 423373462364077. The next prime is 423373462364113. The reversal of 423373462364081 is 180463264373324.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 417966949177600 + 5406513186481 = 20444240^2 + 2325191^2 .

It is a cyclic number.

It is not a de Polignac number, because 423373462364081 - 2² = 423373462364077 is a prime.

It is a super-2 number, since 2×423373462364081² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (423373462364011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211686731182040 + 211686731182041.

It is an arithmetic number, because the mean of its divisors is an integer number (211686731182041).

Almost surely, 2^{423373462364081} is an apocalyptic number.

It is an amenable number.

423373462364081 is a deficient number, since it is larger than the sum of its proper divisors (1).

423373462364081 is an equidigital number, since it uses as much as digits as its factorization.

423373462364081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41803776, while the sum is 56.

The spelling of 423373462364081 in words is "four hundred twenty-three trillion, three hundred seventy-three billion, four hundred sixty-two million, three hundred sixty-four thousand, eighty-one".