245324312455609 has 2 divisors, whose sum is σ = 245324312455610. Its totient is φ = 245324312455608.

The previous prime is 245324312455543. The next prime is 245324312455619. The reversal of 245324312455609 is 906554213423542.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 243363744014400 + 1960568441209 = 15600120^2 + 1400203^2 .

It is a cyclic number.

It is not a de Polignac number, because 245324312455609 - 2³⁹ = 244774556641721 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 245324312455609.

It is not a weakly prime, because it can be changed into another prime (245324312455619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122662156227804 + 122662156227805.

It is an arithmetic number, because the mean of its divisors is an integer number (122662156227805).

Almost surely, 2^{245324312455609} is an apocalyptic number.

It is an amenable number.

245324312455609 is a deficient number, since it is larger than the sum of its proper divisors (1).

245324312455609 is an equidigital number, since it uses as much as digits as its factorization.

245324312455609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104000, while the sum is 55.

The spelling of 245324312455609 in words is "two hundred forty-five trillion, three hundred twenty-four billion, three hundred twelve million, four hundred fifty-five thousand, six hundred nine".