513204340630 has 64 divisors (see below), whose sum is σ = 1025111531520. Its totient is φ = 184199529600.

The previous prime is 513204340603. The next prime is 513204340633. The reversal of 513204340630 is 36043402315.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a junction number, because it is equal to n+sod(n) for n = 513204340592 and 513204340601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513204340633) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 650101 + ... + 1203760.

It is an arithmetic number, because the mean of its divisors is an integer number (16017367680).

Almost surely, 2^513204340630 is an apocalyptic number.

513204340630 is a deficient number, since it is larger than the sum of its proper divisors (511907190890).

513204340630 is a wasteful number, since it uses less digits than its factorization.

513204340630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1853965.

The product of its (nonzero) digits is 25920, while the sum is 31.

Adding to 513204340630 its reverse (36043402315), we get a palindrome (549247742945).

The spelling of 513204340630 in words is "five hundred thirteen billion, two hundred four million, three hundred forty thousand, six hundred thirty".