145446331337 has 2 divisors, whose sum is σ = 145446331338. Its totient is φ = 145446331336.

The previous prime is 145446331321. The next prime is 145446331403. The reversal of 145446331337 is 733133644541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 139714478656 + 5731852681 = 373784^2 + 75709^2 .

It is a cyclic number.

It is not a de Polignac number, because 145446331337 - 2⁴ = 145446331321 is a prime.

It is not a weakly prime, because it can be changed into another prime (145446333337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72723165668 + 72723165669.

It is an arithmetic number, because the mean of its divisors is an integer number (72723165669).

Almost surely, 2^145446331337 is an apocalyptic number.

It is an amenable number.

145446331337 is a deficient number, since it is larger than the sum of its proper divisors (1).

145446331337 is an equidigital number, since it uses as much as digits as its factorization.

145446331337 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1088640, while the sum is 44.

Adding to 145446331337 its reverse (733133644541), we get a palindrome (878579975878).

The spelling of 145446331337 in words is "one hundred forty-five billion, four hundred forty-six million, three hundred thirty-one thousand, three hundred thirty-seven".