513540233611 has 4 divisors (see below), whose sum is σ = 516120838000. Its totient is φ = 510959629224.

The previous prime is 513540233587. The next prime is 513540233617. The reversal of 513540233611 is 116332045315.

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

It is a cyclic number.

It is not a de Polignac number, because 513540233611 - 2⁵ = 513540233579 is a prime.

It is a super-3 number, since 3×513540233611³ (a number of 36 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (513540233617) 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, 1290301896 + ... + 1290302293.

It is an arithmetic number, because the mean of its divisors is an integer number (129030209500).

Almost surely, 2^513540233611 is an apocalyptic number.

513540233611 is a deficient number, since it is larger than the sum of its proper divisors (2580604389).

513540233611 is a wasteful number, since it uses less digits than its factorization.

513540233611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2580604388.

The product of its (nonzero) digits is 32400, while the sum is 34.

Adding to 513540233611 its reverse (116332045315), we get a palindrome (629872278926).

The spelling of 513540233611 in words is "five hundred thirteen billion, five hundred forty million, two hundred thirty-three thousand, six hundred eleven".