1245533226449 has 2 divisors, whose sum is σ = 1245533226450. Its totient is φ = 1245533226448.

The previous prime is 1245533226439. The next prime is 1245533226461. The reversal of 1245533226449 is 9446223355421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 983944963600 + 261588262849 = 991940^2 + 511457^2 .

It is a cyclic number.

It is not a de Polignac number, because 1245533226449 - 2⁴ = 1245533226433 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1245533226397 and 1245533226406.

It is not a weakly prime, because it can be changed into another prime (1245533226439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 622766613224 + 622766613225.

It is an arithmetic number, because the mean of its divisors is an integer number (622766613225).

Almost surely, 2^{1245533226449} is an apocalyptic number.

It is an amenable number.

1245533226449 is a deficient number, since it is larger than the sum of its proper divisors (1).

1245533226449 is an equidigital number, since it uses as much as digits as its factorization.

1245533226449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6220800, while the sum is 50.

The spelling of 1245533226449 in words is "one trillion, two hundred forty-five billion, five hundred thirty-three million, two hundred twenty-six thousand, four hundred forty-nine".