6513534368 has 48 divisors (see below), whose sum is σ = 14051094624. Its totient is φ = 2947618560.

The previous prime is 6513534329. The next prime is 6513534389. The reversal of 6513534368 is 8634353156.

It is a happy number.

It is a super-2 number, since 2×6513534368² = 84852259926234318848, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39146 + ... + 120662.

It is an arithmetic number, because the mean of its divisors is an integer number (292731138).

Almost surely, 2^6513534368 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6513534368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7025547312).

6513534368 is an abundant number, since it is smaller than the sum of its proper divisors (7537560256).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6513534368 is a wasteful number, since it uses less digits than its factorization.

6513534368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81765 (or 81757 counting only the distinct ones).

The product of its digits is 777600, while the sum is 44.

The square root of 6513534368 is about 80706.4704221415. The cubic root of 6513534368 is about 1867.5499927060.

The spelling of 6513534368 in words is "six billion, five hundred thirteen million, five hundred thirty-four thousand, three hundred sixty-eight".