505105301241509 has 2 divisors, whose sum is σ = 505105301241510. Its totient is φ = 505105301241508.

The previous prime is 505105301241493. The next prime is 505105301241599. The reversal of 505105301241509 is 905142103501505.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 271532063932900 + 233573237308609 = 16478230^2 + 15283103^2 .

It is a cyclic number.

It is not a de Polignac number, because 505105301241509 - 2⁴ = 505105301241493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (505105301241599) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252552650620754 + 252552650620755.

It is an arithmetic number, because the mean of its divisors is an integer number (252552650620755).

Almost surely, 2^{505105301241509} is an apocalyptic number.

It is an amenable number.

505105301241509 is a deficient number, since it is larger than the sum of its proper divisors (1).

505105301241509 is an equidigital number, since it uses as much as digits as its factorization.

505105301241509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 135000, while the sum is 41.

The spelling of 505105301241509 in words is "five hundred five trillion, one hundred five billion, three hundred one million, two hundred forty-one thousand, five hundred nine".