513213203999 has 4 divisors (see below), whose sum is σ = 520243521936. Its totient is φ = 506182886064.

The previous prime is 513213203963. The next prime is 513213204011. The reversal of 513213203999 is 999302312315.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-513213203999 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 (513213208999) 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 3 ways as a sum of consecutive naturals, for example, 3515158859 + ... + 3515159004.

It is an arithmetic number, because the mean of its divisors is an integer number (130060880484).

Almost surely, 2^513213203999 is an apocalyptic number.

513213203999 is a deficient number, since it is larger than the sum of its proper divisors (7030317937).

513213203999 is an equidigital number, since it uses as much as digits as its factorization.

513213203999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7030317936.

The product of its (nonzero) digits is 393660, while the sum is 47.

The spelling of 513213203999 in words is "five hundred thirteen billion, two hundred thirteen million, two hundred three thousand, nine hundred ninety-nine".