513540666532 has 12 divisors (see below), whose sum is σ = 898778413260. Its totient is φ = 256746834176.

The previous prime is 513540666521. The next prime is 513540666539. The reversal of 513540666532 is 235666045315.

It can be written as a sum of positive squares in 2 ways, for example, as 398522013796 + 115018652736 = 631286^2 + 339144^2 .

It is not an unprimeable number, because it can be changed into a prime (513540666539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5825557 + ... + 5913052.

It is an arithmetic number, because the mean of its divisors is an integer number (74898201105).

Almost surely, 2^513540666532 is an apocalyptic number.

It is an amenable number.

513540666532 is a deficient number, since it is larger than the sum of its proper divisors (385237746728).

513540666532 is a wasteful number, since it uses less digits than its factorization.

513540666532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11749550 (or 11749548 counting only the distinct ones).

The product of its (nonzero) digits is 1944000, while the sum is 46.

The spelling of 513540666532 in words is "five hundred thirteen billion, five hundred forty million, six hundred sixty-six thousand, five hundred thirty-two".