513525534563 has 4 divisors (see below), whose sum is σ = 513529746000. Its totient is φ = 513521323128.

The previous prime is 513525534559. The next prime is 513525534649. The reversal of 513525534563 is 365435525315.

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

It is a cyclic number.

It is not a de Polignac number, because 513525534563 - 2² = 513525534559 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (513525534523) 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, 1917188 + ... + 2168561.

It is an arithmetic number, because the mean of its divisors is an integer number (128382436500).

Almost surely, 2^513525534563 is an apocalyptic number.

513525534563 is a deficient number, since it is larger than the sum of its proper divisors (4211437).

513525534563 is a wasteful number, since it uses less digits than its factorization.

513525534563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4211436.

The product of its digits is 4050000, while the sum is 47.

The spelling of 513525534563 in words is "five hundred thirteen billion, five hundred twenty-five million, five hundred thirty-four thousand, five hundred sixty-three".