204240224010457 has 2 divisors, whose sum is σ = 204240224010458. Its totient is φ = 204240224010456.

The previous prime is 204240224010371. The next prime is 204240224010509. The reversal of 204240224010457 is 754010422042402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 118904827113801 + 85335396896656 = 10904349^2 + 9237716^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-204240224010457 is a prime.

It is not a weakly prime, because it can be changed into another prime (204240224070457) 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, 102120112005228 + 102120112005229.

It is an arithmetic number, because the mean of its divisors is an integer number (102120112005229).

Almost surely, 2^{204240224010457} is an apocalyptic number.

It is an amenable number.

204240224010457 is a deficient number, since it is larger than the sum of its proper divisors (1).

204240224010457 is an equidigital number, since it uses as much as digits as its factorization.

204240224010457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 143360, while the sum is 37.

Adding to 204240224010457 its reverse (754010422042402), we get a palindrome (958250646052859).

The spelling of 204240224010457 in words is "two hundred four trillion, two hundred forty billion, two hundred twenty-four million, ten thousand, four hundred fifty-seven".