513243442544 has 40 divisors (see below), whose sum is σ = 1136597059680. Its totient is φ = 219936423168.

The previous prime is 513243442519. The next prime is 513243442553. The reversal of 513243442544 is 445244342315.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 744002 + ... + 1256990.

It is an arithmetic number, because the mean of its divisors is an integer number (28414926492).

Almost surely, 2^513243442544 is an apocalyptic number.

It is an amenable number.

513243442544 is an abundant number, since it is smaller than the sum of its proper divisors (623353617136).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

513243442544 is a wasteful number, since it uses less digits than its factorization.

513243442544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521937 (or 521931 counting only the distinct ones).

The product of its digits is 921600, while the sum is 41.

Adding to 513243442544 its reverse (445244342315), we get a palindrome (958487784859).

The spelling of 513243442544 in words is "five hundred thirteen billion, two hundred forty-three million, four hundred forty-two thousand, five hundred forty-four".