520553342511 has 12 divisors (see below), whose sum is σ = 777838328280. Its totient is φ = 335068818000.

The previous prime is 520553342489. The next prime is 520553342513. The reversal of 520553342511 is 115243355025.

520553342511 is a `hidden beast` number, since 5 + 20 + 55 + 33 + 42 + 511 = 666.

It is not a de Polignac number, because 520553342511 - 2⁹ = 520553341999 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520553342513) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 997228365 + ... + 997228886.

It is an arithmetic number, because the mean of its divisors is an integer number (64819860690).

Almost surely, 2^520553342511 is an apocalyptic number.

520553342511 is a deficient number, since it is larger than the sum of its proper divisors (257284985769).

520553342511 is a wasteful number, since it uses less digits than its factorization.

520553342511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1994457286 (or 1994457283 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 36.

Adding to 520553342511 its reverse (115243355025), we get a palindrome (635796697536).

The spelling of 520553342511 in words is "five hundred twenty billion, five hundred fifty-three million, three hundred forty-two thousand, five hundred eleven".