1665430352023 has 2 divisors, whose sum is σ = 1665430352024. Its totient is φ = 1665430352022.

The previous prime is 1665430351997. The next prime is 1665430352029. The reversal of 1665430352023 is 3202530345661.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1665430352023 - 2²¹ = 1665428254871 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1665430352029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 832715176011 + 832715176012.

It is an arithmetic number, because the mean of its divisors is an integer number (832715176012).

Almost surely, 2^{1665430352023} is an apocalyptic number.

1665430352023 is a deficient number, since it is larger than the sum of its proper divisors (1).

1665430352023 is an equidigital number, since it uses as much as digits as its factorization.

1665430352023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 388800, while the sum is 40.

Adding to 1665430352023 its reverse (3202530345661), we get a palindrome (4867960697684).

The spelling of 1665430352023 in words is "one trillion, six hundred sixty-five billion, four hundred thirty million, three hundred fifty-two thousand, twenty-three".