513552545065 has 48 divisors (see below), whose sum is σ = 732353087232. Its totient is φ = 344552818176.

The previous prime is 513552545003. The next prime is 513552545101. The reversal of 513552545065 is 560545255315.

It is not a de Polignac number, because 513552545065 - 2¹⁹ = 513552020777 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 64053937 + ... + 64061953.

It is an arithmetic number, because the mean of its divisors is an integer number (15257355984).

Almost surely, 2^513552545065 is an apocalyptic number.

It is an amenable number.

513552545065 is a deficient number, since it is larger than the sum of its proper divisors (218800542167).

513552545065 is a wasteful number, since it uses less digits than its factorization.

513552545065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13646 (or 13639 counting only the distinct ones).

The product of its (nonzero) digits is 2250000, while the sum is 46.

The spelling of 513552545065 in words is "five hundred thirteen billion, five hundred fifty-two million, five hundred forty-five thousand, sixty-five".