509865824519 has 2 divisors, whose sum is σ = 509865824520. Its totient is φ = 509865824518.

The previous prime is 509865824473. The next prime is 509865824549. The reversal of 509865824519 is 915428568905.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 509865824519 - 2²⁴ = 509849047303 is a prime.

It is a super-2 number, since 2×509865824519² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (509865824549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 254932912259 + 254932912260.

It is an arithmetic number, because the mean of its divisors is an integer number (254932912260).

Almost surely, 2^509865824519 is an apocalyptic number.

509865824519 is a deficient number, since it is larger than the sum of its proper divisors (1).

509865824519 is an equidigital number, since it uses as much as digits as its factorization.

509865824519 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104000, while the sum is 62.

The spelling of 509865824519 in words is "five hundred nine billion, eight hundred sixty-five million, eight hundred twenty-four thousand, five hundred nineteen".