520505211200553 has 12 divisors (see below), whose sum is σ = 753635230224240. Its totient is φ = 346175303548536.

The previous prime is 520505211200551. The next prime is 520505211200563. The reversal of 520505211200553 is 355002112505025.

520505211200553 is a `hidden beast` number, since 5 + 2 + 0 + 5 + 0 + 521 + 120 + 0 + 5 + 5 + 3 = 666.

It is not a de Polignac number, because 520505211200553 - 2¹ = 520505211200551 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (520505211200551) 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 11 ways as a sum of consecutive naturals, for example, 69014211451 + ... + 69014218992.

It is an arithmetic number, because the mean of its divisors is an integer number (62802935852020).

Almost surely, 2^{520505211200553} is an apocalyptic number.

It is an amenable number.

520505211200553 is a deficient number, since it is larger than the sum of its proper divisors (233130019023687).

520505211200553 is a wasteful number, since it uses less digits than its factorization.

520505211200553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138028430868 (or 138028430865 counting only the distinct ones).

The product of its (nonzero) digits is 75000, while the sum is 36.

Adding to 520505211200553 its reverse (355002112505025), we get a palindrome (875507323705578).

The spelling of 520505211200553 in words is "five hundred twenty trillion, five hundred five billion, two hundred eleven million, two hundred thousand, five hundred fifty-three".