520206142233 has 4 divisors (see below), whose sum is σ = 693608189648. Its totient is φ = 346804094820.

The previous prime is 520206142187. The next prime is 520206142319. The reversal of 520206142233 is 332241602025.

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 not a de Polignac number, because 520206142233 - 2¹⁶ = 520206076697 is a prime.

It is a super-2 number, since 2×520206142233² (a number of 24 digits) contains 22 as substring.

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 520206142233.

It is not an unprimeable number, because it can be changed into a prime (520206142133) 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, 86701023703 + ... + 86701023708.

It is an arithmetic number, because the mean of its divisors is an integer number (173402047412).

Almost surely, 2^520206142233 is an apocalyptic number.

It is an amenable number.

520206142233 is a deficient number, since it is larger than the sum of its proper divisors (173402047415).

520206142233 is a wasteful number, since it uses less digits than its factorization.

520206142233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173402047414.

The product of its (nonzero) digits is 17280, while the sum is 30.

Adding to 520206142233 its reverse (332241602025), we get a palindrome (852447744258).

The spelling of 520206142233 in words is "five hundred twenty billion, two hundred six million, one hundred forty-two thousand, two hundred thirty-three".