145220354031017 has 2 divisors, whose sum is σ = 145220354031018. Its totient is φ = 145220354031016.

The previous prime is 145220354030909. The next prime is 145220354031023. The reversal of 145220354031017 is 710130453022541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 144430857807721 + 789496223296 = 12017939^2 + 888536^2 .

It is a cyclic number.

It is not a de Polignac number, because 145220354031017 - 2⁴⁴ = 127628167986601 is a prime.

It is not a weakly prime, because it can be changed into another prime (145220354031047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72610177015508 + 72610177015509.

It is an arithmetic number, because the mean of its divisors is an integer number (72610177015509).

Almost surely, 2^{145220354031017} is an apocalyptic number.

It is an amenable number.

145220354031017 is a deficient number, since it is larger than the sum of its proper divisors (1).

145220354031017 is an equidigital number, since it uses as much as digits as its factorization.

145220354031017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 100800, while the sum is 38.

The spelling of 145220354031017 in words is "one hundred forty-five trillion, two hundred twenty billion, three hundred fifty-four million, thirty-one thousand, seventeen".