520272868729 has 4 divisors (see below), whose sum is σ = 520282483300. Its totient is φ = 520263254160.

The previous prime is 520272868669. The next prime is 520272868733. The reversal of 520272868729 is 927868272025.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 299617201129 + 220655667600 = 547373^2 + 469740^2 .

It is a cyclic number.

It is not a de Polignac number, because 520272868729 - 2¹¹ = 520272866681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (520272868769) 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 in 3 ways as a sum of consecutive naturals, for example, 4725654 + ... + 4834495.

It is an arithmetic number, because the mean of its divisors is an integer number (130070620825).

Almost surely, 2^520272868729 is an apocalyptic number.

It is an amenable number.

520272868729 is a deficient number, since it is larger than the sum of its proper divisors (9614571).

520272868729 is an equidigital number, since it uses as much as digits as its factorization.

520272868729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9614570.

The product of its (nonzero) digits is 13547520, while the sum is 58.

The spelling of 520272868729 in words is "five hundred twenty billion, two hundred seventy-two million, eight hundred sixty-eight thousand, seven hundred twenty-nine".