513551644463 has 48 divisors (see below), whose sum is σ = 617870073600. Its totient is φ = 423033811200.

The previous prime is 513551644429. The next prime is 513551644481. The reversal of 513551644463 is 364446155315.

It is not a de Polignac number, because 513551644463 - 2²² = 513547450159 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513551644483) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 30745088 + ... + 30761786.

It is an arithmetic number, because the mean of its divisors is an integer number (12872293200).

Almost surely, 2^513551644463 is an apocalyptic number.

513551644463 is a deficient number, since it is larger than the sum of its proper divisors (104318429137).

513551644463 is a wasteful number, since it uses less digits than its factorization.

513551644463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17040 (or 17027 counting only the distinct ones).

The product of its digits is 2592000, while the sum is 47.

Adding to 513551644463 its reverse (364446155315), we get a palindrome (877997799778).

The spelling of 513551644463 in words is "five hundred thirteen billion, five hundred fifty-one million, six hundred forty-four thousand, four hundred sixty-three".