520135013213 has 8 divisors (see below), whose sum is σ = 523682029056. Its totient is φ = 516592339200.

The previous prime is 520135013201. The next prime is 520135013221. The reversal of 520135013213 is 312310531025.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 520135013213 - 2⁴ = 520135013197 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520135013273) 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 7 ways as a sum of consecutive naturals, for example, 844868 + ... + 1324413.

It is an arithmetic number, because the mean of its divisors is an integer number (65460253632).

Almost surely, 2^520135013213 is an apocalyptic number.

It is an amenable number.

520135013213 is a deficient number, since it is larger than the sum of its proper divisors (3547015843).

520135013213 is a wasteful number, since it uses less digits than its factorization.

520135013213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2170915.

The product of its (nonzero) digits is 2700, while the sum is 26.

Adding to 520135013213 its reverse (312310531025), we get a palindrome (832445544238).

The spelling of 520135013213 in words is "five hundred twenty billion, one hundred thirty-five million, thirteen thousand, two hundred thirteen".