513323865530 has 64 divisors (see below), whose sum is σ = 1058300225280. Its totient is φ = 175610571264.

The previous prime is 513323865503. The next prime is 513323865533. The reversal of 513323865530 is 35568323315.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (513323865533) 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, 74857862 + ... + 74864718.

It is an arithmetic number, because the mean of its divisors is an integer number (16535941020).

Almost surely, 2^513323865530 is an apocalyptic number.

513323865530 is an abundant number, since it is smaller than the sum of its proper divisors (544976359750).

513323865530 is a wasteful number, since it uses less digits than its factorization.

513323865530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9063.

The product of its (nonzero) digits is 972000, while the sum is 44.

The spelling of 513323865530 in words is "five hundred thirteen billion, three hundred twenty-three million, eight hundred sixty-five thousand, five hundred thirty".