245423519969 has 2 divisors, whose sum is σ = 245423519970. Its totient is φ = 245423519968.

The previous prime is 245423519953. The next prime is 245423520007. The reversal of 245423519969 is 969915324542.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 210112224400 + 35311295569 = 458380^2 + 187913^2 .

It is a cyclic number.

It is not a de Polignac number, because 245423519969 - 2⁴ = 245423519953 is a prime.

It is a super-2 number, since 2×245423519969² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (245423519069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122711759984 + 122711759985.

It is an arithmetic number, because the mean of its divisors is an integer number (122711759985).

Almost surely, 2^245423519969 is an apocalyptic number.

It is an amenable number.

245423519969 is a deficient number, since it is larger than the sum of its proper divisors (1).

245423519969 is an equidigital number, since it uses as much as digits as its factorization.

245423519969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20995200, while the sum is 59.

The spelling of 245423519969 in words is "two hundred forty-five billion, four hundred twenty-three million, five hundred nineteen thousand, nine hundred sixty-nine".