145246331566717 has 2 divisors, whose sum is σ = 145246331566718. Its totient is φ = 145246331566716.

The previous prime is 145246331566601. The next prime is 145246331566781. The reversal of 145246331566717 is 717665133642541.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 113677092506916 + 31569239059801 = 10661946^2 + 5618651^2 .

It is a cyclic number.

It is not a de Polignac number, because 145246331566717 - 2¹⁹ = 145246331042429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145246331564717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72623165783358 + 72623165783359.

It is an arithmetic number, because the mean of its divisors is an integer number (72623165783359).

Almost surely, 2^{145246331566717} is an apocalyptic number.

It is an amenable number.

145246331566717 is a deficient number, since it is larger than the sum of its proper divisors (1).

145246331566717 is an equidigital number, since it uses as much as digits as its factorization.

145246331566717 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 76204800, while the sum is 61.

The spelling of 145246331566717 in words is "one hundred forty-five trillion, two hundred forty-six billion, three hundred thirty-one million, five hundred sixty-six thousand, seven hundred seventeen".