423321144004441 has 2 divisors, whose sum is σ = 423321144004442. Its totient is φ = 423321144004440.

The previous prime is 423321144004427. The next prime is 423321144004457. The reversal of 423321144004441 is 144400441123324.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 314694117744400 + 108627026260041 = 17739620^2 + 10422429^2 .

It is a cyclic number.

It is not a de Polignac number, because 423321144004441 - 2¹⁵ = 423321143971673 is a prime.

It is a super-2 number, since 2×423321144004441² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 423321144004441.

It is not a weakly prime, because it can be changed into another prime (423321144004741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211660572002220 + 211660572002221.

It is an arithmetic number, because the mean of its divisors is an integer number (211660572002221).

Almost surely, 2^{423321144004441} is an apocalyptic number.

It is an amenable number.

423321144004441 is a deficient number, since it is larger than the sum of its proper divisors (1).

423321144004441 is an equidigital number, since it uses as much as digits as its factorization.

423321144004441 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 147456, while the sum is 37.

Adding to 423321144004441 its reverse (144400441123324), we get a palindrome (567721585127765).

The spelling of 423321144004441 in words is "four hundred twenty-three trillion, three hundred twenty-one billion, one hundred forty-four million, four thousand, four hundred forty-one".