520016005123 has 8 divisors (see below), whose sum is σ = 529074260096. Its totient is φ = 510974956800.

The previous prime is 520016005109. The next prime is 520016005153. The reversal of 520016005123 is 321500610025.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 520016005123 - 2⁹ = 520016004611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (520016005153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4240686 + ... + 4361587.

It is an arithmetic number, because the mean of its divisors is an integer number (66134282512).

Almost surely, 2^520016005123 is an apocalyptic number.

520016005123 is a deficient number, since it is larger than the sum of its proper divisors (9058254973).

520016005123 is an equidigital number, since it uses as much as digits as its factorization.

520016005123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8603325.

The product of its (nonzero) digits is 1800, while the sum is 25.

Adding to 520016005123 its reverse (321500610025), we get a palindrome (841516615148).

The spelling of 520016005123 in words is "five hundred twenty billion, sixteen million, five thousand, one hundred twenty-three".