245663345489 has 2 divisors, whose sum is σ = 245663345490. Its totient is φ = 245663345488.

The previous prime is 245663345467. The next prime is 245663345533. The reversal of 245663345489 is 984543366542.

245663345489 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 180971966464 + 64691379025 = 425408^2 + 254345^2 .

It is a cyclic number.

It is not a de Polignac number, because 245663345489 - 2⁸ = 245663345233 is a prime.

It is not a weakly prime, because it can be changed into another prime (245663345789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122831672744 + 122831672745.

It is an arithmetic number, because the mean of its divisors is an integer number (122831672745).

Almost surely, 2^245663345489 is an apocalyptic number.

It is an amenable number.

245663345489 is a deficient number, since it is larger than the sum of its proper divisors (1).

245663345489 is an equidigital number, since it uses as much as digits as its factorization.

245663345489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 74649600, while the sum is 59.

The spelling of 245663345489 in words is "two hundred forty-five billion, six hundred sixty-three million, three hundred forty-five thousand, four hundred eighty-nine".