245200450009 has 2 divisors, whose sum is σ = 245200450010. Its totient is φ = 245200450008.

The previous prime is 245200449971. The next prime is 245200450043. The reversal of 245200450009 is 900054002542.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 193828867600 + 51371582409 = 440260^2 + 226653^2 .

It is a cyclic number.

It is not a de Polignac number, because 245200450009 - 2¹⁹ = 245199925721 is a prime.

It is a super-2 number, since 2×245200450009² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (245200450409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122600225004 + 122600225005.

It is an arithmetic number, because the mean of its divisors is an integer number (122600225005).

Almost surely, 2^245200450009 is an apocalyptic number.

It is an amenable number.

245200450009 is a deficient number, since it is larger than the sum of its proper divisors (1).

245200450009 is an equidigital number, since it uses as much as digits as its factorization.

245200450009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14400, while the sum is 31.

The spelling of 245200450009 in words is "two hundred forty-five billion, two hundred million, four hundred fifty thousand, nine".