520500400211 has 4 divisors (see below), whose sum is σ = 567818618424. Its totient is φ = 473182182000.

The previous prime is 520500400187. The next prime is 520500400223. The reversal of 520500400211 is 112004005025.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-520500400211 is a prime.

It is a super-2 number, since 2×520500400211² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (520500400241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23659109090 + ... + 23659109111.

It is an arithmetic number, because the mean of its divisors is an integer number (141954654606).

Almost surely, 2^520500400211 is an apocalyptic number.

520500400211 is a deficient number, since it is larger than the sum of its proper divisors (47318218213).

520500400211 is a wasteful number, since it uses less digits than its factorization.

520500400211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47318218212.

The product of its (nonzero) digits is 400, while the sum is 20.

Adding to 520500400211 its reverse (112004005025), we get a palindrome (632504405236).

The spelling of 520500400211 in words is "five hundred twenty billion, five hundred million, four hundred thousand, two hundred eleven".