145471305697 has 2 divisors, whose sum is σ = 145471305698. Its totient is φ = 145471305696.

The previous prime is 145471305677. The next prime is 145471305719. The reversal of 145471305697 is 796503174541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 100136805136 + 45334500561 = 316444^2 + 212919^2 .

It is a cyclic number.

It is not a de Polignac number, because 145471305697 - 2⁷ = 145471305569 is a prime.

It is not a weakly prime, because it can be changed into another prime (145471305667) 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, 72735652848 + 72735652849.

It is an arithmetic number, because the mean of its divisors is an integer number (72735652849).

Almost surely, 2^145471305697 is an apocalyptic number.

It is an amenable number.

145471305697 is a deficient number, since it is larger than the sum of its proper divisors (1).

145471305697 is an equidigital number, since it uses as much as digits as its factorization.

145471305697 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3175200, while the sum is 52.

The spelling of 145471305697 in words is "one hundred forty-five billion, four hundred seventy-one million, three hundred five thousand, six hundred ninety-seven".