423440012203969 has 2 divisors, whose sum is σ = 423440012203970. Its totient is φ = 423440012203968.

The previous prime is 423440012203961. The next prime is 423440012204021. The reversal of 423440012203969 is 969302210044324.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 402600212010000 + 20839800193969 = 20064900^2 + 4565063^2 .

It is a cyclic number.

It is not a de Polignac number, because 423440012203969 - 2³ = 423440012203961 is a prime.

It is a super-2 number, since 2×423440012203969² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (423440012203961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211720006101984 + 211720006101985.

It is an arithmetic number, because the mean of its divisors is an integer number (211720006101985).

Almost surely, 2^{423440012203969} is an apocalyptic number.

It is an amenable number.

423440012203969 is a deficient number, since it is larger than the sum of its proper divisors (1).

423440012203969 is an equidigital number, since it uses as much as digits as its factorization.

423440012203969 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2239488, while the sum is 49.

The spelling of 423440012203969 in words is "four hundred twenty-three trillion, four hundred forty billion, twelve million, two hundred three thousand, nine hundred sixty-nine".