513304551135613 has 4 divisors (see below), whose sum is σ = 513304624705180. Its totient is φ = 513304477566048.

The previous prime is 513304551135587. The next prime is 513304551135709. The reversal of 513304551135613 is 316531155403315.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 465700802330404 + 47603748805209 = 21580102^2 + 6899547^2 .

It is a cyclic number.

It is not a de Polignac number, because 513304551135613 - 2²⁵ = 513304517581181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513304551135913) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25076970 + ... + 40687387.

It is an arithmetic number, because the mean of its divisors is an integer number (128326156176295).

Almost surely, 2^{513304551135613} is an apocalyptic number.

It is an amenable number.

513304551135613 is a deficient number, since it is larger than the sum of its proper divisors (73569567).

513304551135613 is an equidigital number, since it uses as much as digits as its factorization.

513304551135613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73569566.

The product of its (nonzero) digits is 1215000, while the sum is 46.

The spelling of 513304551135613 in words is "five hundred thirteen trillion, three hundred four billion, five hundred fifty-one million, one hundred thirty-five thousand, six hundred thirteen".