520355042399 has 8 divisors (see below), whose sum is σ = 537158863488. Its totient is φ = 503552357280.

The previous prime is 520355042393. The next prime is 520355042411. The reversal of 520355042399 is 993240553025.

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 520355042399 - 2¹⁶ = 520354976863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520355042393) 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 7 ways as a sum of consecutive naturals, for example, 701249 + ... + 1237925.

It is an arithmetic number, because the mean of its divisors is an integer number (67144857936).

Almost surely, 2^520355042399 is an apocalyptic number.

520355042399 is a deficient number, since it is larger than the sum of its proper divisors (16803821089).

520355042399 is a wasteful number, since it uses less digits than its factorization.

520355042399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 567985.

The product of its (nonzero) digits is 1458000, while the sum is 47.

The spelling of 520355042399 in words is "five hundred twenty billion, three hundred fifty-five million, forty-two thousand, three hundred ninety-nine".