513343523065 has 4 divisors (see below), whose sum is σ = 616012227684. Its totient is φ = 410674818448.

The previous prime is 513343523057. The next prime is 513343523149. The reversal of 513343523065 is 560325343315.

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 125497313536 + 387846209529 = 354256^2 + 622773^2 .

It is a cyclic number.

It is not a de Polignac number, because 513343523065 - 2³ = 513343523057 is a prime.

It is a Duffinian 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, 51334352302 + ... + 51334352311.

It is an arithmetic number, because the mean of its divisors is an integer number (154003056921).

Almost surely, 2^513343523065 is an apocalyptic number.

It is an amenable number.

513343523065 is a deficient number, since it is larger than the sum of its proper divisors (102668704619).

513343523065 is a wasteful number, since it uses less digits than its factorization.

513343523065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102668704618.

The product of its (nonzero) digits is 486000, while the sum is 40.

The spelling of 513343523065 in words is "five hundred thirteen billion, three hundred forty-three million, five hundred twenty-three thousand, sixty-five".