520423543145413 has 16 divisors (see below), whose sum is σ = 580222007507520. Its totient is φ = 463884192297216.

The previous prime is 520423543145399. The next prime is 520423543145453. The reversal of 520423543145413 is 314541345324025.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-520423543145413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520423543145453) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 253676170 + ... + 255719467.

It is an arithmetic number, because the mean of its divisors is an integer number (36263875469220).

Almost surely, 2^{520423543145413} is an apocalyptic number.

It is an amenable number.

520423543145413 is a deficient number, since it is larger than the sum of its proper divisors (59798464362107).

520423543145413 is a wasteful number, since it uses less digits than its factorization.

520423543145413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509398836.

The product of its (nonzero) digits is 3456000, while the sum is 46.

Adding to 520423543145413 its reverse (314541345324025), we get a palindrome (834964888469438).

The spelling of 520423543145413 in words is "five hundred twenty trillion, four hundred twenty-three billion, five hundred forty-three million, one hundred forty-five thousand, four hundred thirteen".