1245045357449 has 2 divisors, whose sum is σ = 1245045357450. Its totient is φ = 1245045357448.

The previous prime is 1245045357427. The next prime is 1245045357463. The reversal of 1245045357449 is 9447535405421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1091412715849 + 153632641600 = 1044707^2 + 391960^2 .

It is a cyclic number.

It is not a de Polignac number, because 1245045357449 - 2¹⁶ = 1245045291913 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1245045357449.

It is not a weakly prime, because it can be changed into another prime (1245045357419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 622522678724 + 622522678725.

It is an arithmetic number, because the mean of its divisors is an integer number (622522678725).

Almost surely, 2^{1245045357449} is an apocalyptic number.

It is an amenable number.

1245045357449 is a deficient number, since it is larger than the sum of its proper divisors (1).

1245045357449 is an equidigital number, since it uses as much as digits as its factorization.

1245045357449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096000, while the sum is 53.

The spelling of 1245045357449 in words is "one trillion, two hundred forty-five billion, forty-five million, three hundred fifty-seven thousand, four hundred forty-nine".