520291253505 has 16 divisors (see below), whose sum is σ = 832474977984. Its totient is φ = 277485677760.

The previous prime is 520291253483. The next prime is 520291253507. The reversal of 520291253505 is 505352192025.

It is a happy number.

It is not a de Polignac number, because 520291253505 - 2²⁴ = 520274476289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (520291253507) 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 in 15 ways as a sum of consecutive naturals, for example, 2463127 + ... + 2666003.

It is an arithmetic number, because the mean of its divisors is an integer number (52029686124).

Almost surely, 2^520291253505 is an apocalyptic number.

It is an amenable number.

520291253505 is a deficient number, since it is larger than the sum of its proper divisors (312183724479).

520291253505 is a wasteful number, since it uses less digits than its factorization.

520291253505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373856.

The product of its (nonzero) digits is 135000, while the sum is 39.

The spelling of 520291253505 in words is "five hundred twenty billion, two hundred ninety-one million, two hundred fifty-three thousand, five hundred five".