505765534529 has 2 divisors, whose sum is σ = 505765534530. Its totient is φ = 505765534528.

The previous prime is 505765534457. The next prime is 505765534553. The reversal of 505765534529 is 925435567505.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 496573902400 + 9191632129 = 704680^2 + 95873^2 .

It is a cyclic number.

It is not a de Polignac number, because 505765534529 - 2²⁴ = 505748757313 is a prime.

It is not a weakly prime, because it can be changed into another prime (505765534129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252882767264 + 252882767265.

It is an arithmetic number, because the mean of its divisors is an integer number (252882767265).

Almost surely, 2^505765534529 is an apocalyptic number.

It is an amenable number.

505765534529 is a deficient number, since it is larger than the sum of its proper divisors (1).

505765534529 is an equidigital number, since it uses as much as digits as its factorization.

505765534529 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28350000, while the sum is 56.

The spelling of 505765534529 in words is "five hundred five billion, seven hundred sixty-five million, five hundred thirty-four thousand, five hundred twenty-nine".