145301643217 has 2 divisors, whose sum is σ = 145301643218. Its totient is φ = 145301643216.

The previous prime is 145301643187. The next prime is 145301643301. The reversal of 145301643217 is 712346103541.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 94910821776 + 50390821441 = 308076^2 + 224479^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145301643217 is a prime.

It is a super-2 number, since 2×145301643217² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (145301647217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72650821608 + 72650821609.

It is an arithmetic number, because the mean of its divisors is an integer number (72650821609).

Almost surely, 2^145301643217 is an apocalyptic number.

It is an amenable number.

145301643217 is a deficient number, since it is larger than the sum of its proper divisors (1).

145301643217 is an equidigital number, since it uses as much as digits as its factorization.

145301643217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60480, while the sum is 37.

Adding to 145301643217 its reverse (712346103541), we get a palindrome (857647746758).

The spelling of 145301643217 in words is "one hundred forty-five billion, three hundred one million, six hundred forty-three thousand, two hundred seventeen".