1245311545213 has 2 divisors, whose sum is σ = 1245311545214. Its totient is φ = 1245311545212.

The previous prime is 1245311545207. The next prime is 1245311545229. The reversal of 1245311545213 is 3125451135421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1238461831044 + 6849714169 = 1112862^2 + 82763^2 .

It is a cyclic number.

It is not a de Polignac number, because 1245311545213 - 2¹³ = 1245311537021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1245311545013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 622655772606 + 622655772607.

It is an arithmetic number, because the mean of its divisors is an integer number (622655772607).

Almost surely, 2^{1245311545213} is an apocalyptic number.

It is an amenable number.

1245311545213 is a deficient number, since it is larger than the sum of its proper divisors (1).

1245311545213 is an equidigital number, since it uses as much as digits as its factorization.

1245311545213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72000, while the sum is 37.

The spelling of 1245311545213 in words is "one trillion, two hundred forty-five billion, three hundred eleven million, five hundred forty-five thousand, two hundred thirteen".