520403234999 has 16 divisors (see below), whose sum is σ = 538490394624. Its totient is φ = 502398136800.

The previous prime is 520403234957. The next prime is 520403235083. The reversal of 520403234999 is 999432304025.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-520403234999 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 (520423234999) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54988742 + ... + 54998204.

It is an arithmetic number, because the mean of its divisors is an integer number (33655649664).

Almost surely, 2^520403234999 is an apocalyptic number.

520403234999 is a deficient number, since it is larger than the sum of its proper divisors (18087159625).

520403234999 is a wasteful number, since it uses less digits than its factorization.

520403234999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13598.

The product of its (nonzero) digits is 2099520, while the sum is 50.

The spelling of 520403234999 in words is "five hundred twenty billion, four hundred three million, two hundred thirty-four thousand, nine hundred ninety-nine".