143665623322673 has 2 divisors, whose sum is σ = 143665623322674. Its totient is φ = 143665623322672.

The previous prime is 143665623322549. The next prime is 143665623322703. The reversal of 143665623322673 is 376223326566341.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 140105880776689 + 3559742545984 = 11836633^2 + 1886728^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-143665623322673 is a prime.

It is a super-2 number, since 2×143665623322673² (a number of 29 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (143665623321673) 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, 71832811661336 + 71832811661337.

It is an arithmetic number, because the mean of its divisors is an integer number (71832811661337).

Almost surely, 2^{143665623322673} is an apocalyptic number.

It is an amenable number.

143665623322673 is a deficient number, since it is larger than the sum of its proper divisors (1).

143665623322673 is an equidigital number, since it uses as much as digits as its factorization.

143665623322673 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 117573120, while the sum is 59.

The spelling of 143665623322673 in words is "one hundred forty-three trillion, six hundred sixty-five billion, six hundred twenty-three million, three hundred twenty-two thousand, six hundred seventy-three".