513505113344 has 36 divisors (see below), whose sum is σ = 1025484192180. Its totient is φ = 256632360960.

The previous prime is 513505113307. The next prime is 513505113379. The reversal of 513505113344 is 443311505315.

It can be written as a sum of positive squares in 2 ways, for example, as 384400000000 + 129105113344 = 620000^2 + 359312^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79652 + ... + 1016540.

It is an arithmetic number, because the mean of its divisors is an integer number (28485672005).

Almost surely, 2^513505113344 is an apocalyptic number.

It is an amenable number.

513505113344 is a deficient number, since it is larger than the sum of its proper divisors (511979078836).

513505113344 is an equidigital number, since it uses as much as digits as its factorization.

513505113344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 939046 (or 939032 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 35.

Adding to 513505113344 its reverse (443311505315), we get a palindrome (956816618659).

The spelling of 513505113344 in words is "five hundred thirteen billion, five hundred five million, one hundred thirteen thousand, three hundred forty-four".