245260201609 has 2 divisors, whose sum is σ = 245260201610. Its totient is φ = 245260201608.

The previous prime is 245260201607. The next prime is 245260201709. The reversal of 245260201609 is 906102062542.

245260201609 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., 241518188025 + 3742013584 = 491445^2 + 61172^2 .

It is a cyclic number.

It is not a de Polignac number, because 245260201609 - 2¹ = 245260201607 is a prime.

Together with 245260201607, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (245260201601) 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, 122630100804 + 122630100805.

It is an arithmetic number, because the mean of its divisors is an integer number (122630100805).

Almost surely, 2^245260201609 is an apocalyptic number.

It is an amenable number.

245260201609 is a deficient number, since it is larger than the sum of its proper divisors (1).

245260201609 is an equidigital number, since it uses as much as digits as its factorization.

245260201609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51840, while the sum is 37.

The spelling of 245260201609 in words is "two hundred forty-five billion, two hundred sixty million, two hundred one thousand, six hundred nine".