145423452320417 has 2 divisors, whose sum is σ = 145423452320418. Its totient is φ = 145423452320416.

The previous prime is 145423452320387. The next prime is 145423452320423. The reversal of 145423452320417 is 714023254324541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 114923888705536 + 30499563614881 = 10720256^2 + 5522641^2 .

It is a cyclic number.

It is not a de Polignac number, because 145423452320417 - 2⁶ = 145423452320353 is a prime.

It is a super-2 number, since 2×145423452320417² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (145423452340417) 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, 72711726160208 + 72711726160209.

It is an arithmetic number, because the mean of its divisors is an integer number (72711726160209).

Almost surely, 2^{145423452320417} is an apocalyptic number.

It is an amenable number.

145423452320417 is a deficient number, since it is larger than the sum of its proper divisors (1).

145423452320417 is an equidigital number, since it uses as much as digits as its factorization.

145423452320417 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3225600, while the sum is 47.

The spelling of 145423452320417 in words is "one hundred forty-five trillion, four hundred twenty-three billion, four hundred fifty-two million, three hundred twenty thousand, four hundred seventeen".