1345424634509 has 2 divisors, whose sum is σ = 1345424634510. Its totient is φ = 1345424634508.

The previous prime is 1345424634493. The next prime is 1345424634551. The reversal of 1345424634509 is 9054364245431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 860911189609 + 484513444900 = 927853^2 + 696070^2 .

It is a cyclic number.

It is not a de Polignac number, because 1345424634509 - 2⁴ = 1345424634493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1345424634569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 672712317254 + 672712317255.

It is an arithmetic number, because the mean of its divisors is an integer number (672712317255).

Almost surely, 2^{1345424634509} is an apocalyptic number.

It is an amenable number.

1345424634509 is a deficient number, since it is larger than the sum of its proper divisors (1).

1345424634509 is an equidigital number, since it uses as much as digits as its factorization.

1345424634509 is an odious number, because the sum of its binary digits is odd.

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

The spelling of 1345424634509 in words is "one trillion, three hundred forty-five billion, four hundred twenty-four million, six hundred thirty-four thousand, five hundred nine".