145440504227 has 2 divisors, whose sum is σ = 145440504228. Its totient is φ = 145440504226.

The previous prime is 145440504199. The next prime is 145440504247. The reversal of 145440504227 is 722405044541.

It is a strong prime.

It is an emirp because it is prime and its reverse (722405044541) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 145440504227 - 2¹⁰ = 145440503203 is a prime.

It is not a weakly prime, because it can be changed into another prime (145440504247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72720252113 + 72720252114.

It is an arithmetic number, because the mean of its divisors is an integer number (72720252114).

Almost surely, 2^145440504227 is an apocalyptic number.

145440504227 is a deficient number, since it is larger than the sum of its proper divisors (1).

145440504227 is an equidigital number, since it uses as much as digits as its factorization.

145440504227 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 179200, while the sum is 38.

Adding to 145440504227 its reverse (722405044541), we get a palindrome (867845548768).

The spelling of 145440504227 in words is "one hundred forty-five billion, four hundred forty million, five hundred four thousand, two hundred twenty-seven".