520471843423 has 64 divisors (see below), whose sum is σ = 666557890560. Its totient is φ = 396448069248.

The previous prime is 520471843399. The next prime is 520471843439. The reversal of 520471843423 is 324348174025.

It is not a de Polignac number, because 520471843423 - 2⁹ = 520471842911 is a prime.

It is a super-2 number, since 2×520471843423² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 520471843423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520471846423) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 15479436 + ... + 15513022.

It is an arithmetic number, because the mean of its divisors is an integer number (10414967040).

Almost surely, 2^520471843423 is an apocalyptic number.

520471843423 is a deficient number, since it is larger than the sum of its proper divisors (146086047137).

520471843423 is a wasteful number, since it uses less digits than its factorization.

520471843423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33764.

The product of its (nonzero) digits is 645120, while the sum is 43.

The spelling of 520471843423 in words is "five hundred twenty billion, four hundred seventy-one million, eight hundred forty-three thousand, four hundred twenty-three".