520646133061 has 4 divisors (see below), whose sum is σ = 520720613824. Its totient is φ = 520571652300.

The previous prime is 520646133047. The next prime is 520646133071. The reversal of 520646133061 is 160331646025.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 520646133061 - 2⁹ = 520646132549 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 520646133061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520646133041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37229895 + ... + 37243876.

It is an arithmetic number, because the mean of its divisors is an integer number (130180153456).

Almost surely, 2^520646133061 is an apocalyptic number.

It is an amenable number.

520646133061 is a deficient number, since it is larger than the sum of its proper divisors (74480763).

520646133061 is an equidigital number, since it uses as much as digits as its factorization.

520646133061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74480762.

The product of its (nonzero) digits is 77760, while the sum is 37.

Adding to 520646133061 its reverse (160331646025), we get a palindrome (680977779086).

The spelling of 520646133061 in words is "five hundred twenty billion, six hundred forty-six million, one hundred thirty-three thousand, sixty-one".