520401351113 has 6 divisors (see below), whose sum is σ = 605364837066. Its totient is φ = 446058300912.

The previous prime is 520401351053. The next prime is 520401351187. The reversal of 520401351113 is 311153104025.

It can be written as a sum of positive squares in only one way, i.e., 397994433424 + 122406917689 = 630868^2 + 349867^2 .

It is not a de Polignac number, because 520401351113 - 2²² = 520397156809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (520401321113) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5310217820 + ... + 5310217917.

It is an arithmetic number, because the mean of its divisors is an integer number (100894139511).

Almost surely, 2^520401351113 is an apocalyptic number.

It is an amenable number.

520401351113 is a deficient number, since it is larger than the sum of its proper divisors (84963485953).

520401351113 is a wasteful number, since it uses less digits than its factorization.

520401351113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10620435751 (or 10620435744 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 26.

Adding to 520401351113 its reverse (311153104025), we get a palindrome (831554455138).

The spelling of 520401351113 in words is "five hundred twenty billion, four hundred one million, three hundred fifty-one thousand, one hundred thirteen".