145501522447 has 2 divisors, whose sum is σ = 145501522448. Its totient is φ = 145501522446.

The previous prime is 145501522429. The next prime is 145501522541. The reversal of 145501522447 is 744225105541.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 145501522447 - 2²³ = 145493133839 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145501592447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72750761223 + 72750761224.

It is an arithmetic number, because the mean of its divisors is an integer number (72750761224).

Almost surely, 2^145501522447 is an apocalyptic number.

145501522447 is a deficient number, since it is larger than the sum of its proper divisors (1).

145501522447 is an equidigital number, since it uses as much as digits as its factorization.

145501522447 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 224000, while the sum is 40.

Adding to 145501522447 its reverse (744225105541), we get a palindrome (889726627988).

The spelling of 145501522447 in words is "one hundred forty-five billion, five hundred one million, five hundred twenty-two thousand, four hundred forty-seven".