520618327853 has 16 divisors (see below), whose sum is σ = 573037301760. Its totient is φ = 469982497536.

The previous prime is 520618327849. The next prime is 520618327861. The reversal of 520618327853 is 358723816025.

It is a cyclic number.

It is not a de Polignac number, because 520618327853 - 2² = 520618327849 is a prime.

It is a super-3 number, since 3×520618327853³ (a number of 36 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520618327883) 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 15 ways as a sum of consecutive naturals, for example, 463988 + ... + 1120946.

It is an arithmetic number, because the mean of its divisors is an integer number (35814831360).

Almost surely, 2^520618327853 is an apocalyptic number.

It is an amenable number.

520618327853 is a deficient number, since it is larger than the sum of its proper divisors (52418973907).

520618327853 is a wasteful number, since it uses less digits than its factorization.

520618327853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 658316.

The product of its (nonzero) digits is 2419200, while the sum is 50.

The spelling of 520618327853 in words is "five hundred twenty billion, six hundred eighteen million, three hundred twenty-seven thousand, eight hundred fifty-three".