6513957968 has 20 divisors (see below), whose sum is σ = 14423764320. Its totient is φ = 2791696224.

The previous prime is 6513957937. The next prime is 6513957991. The reversal of 6513957968 is 8697593156.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29080058 + ... + 29080281.

It is an arithmetic number, because the mean of its divisors is an integer number (721188216).

Almost surely, 2^6513957968 is an apocalyptic number.

It is an amenable number.

6513957968 is an abundant number, since it is smaller than the sum of its proper divisors (7909806352).

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

6513957968 is a wasteful number, since it uses less digits than its factorization.

6513957968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58160354 (or 58160348 counting only the distinct ones).

The product of its digits is 12247200, while the sum is 59.

The square root of 6513957968 is about 80709.0947043764. The cubic root of 6513957968 is about 1867.5904764630.

The spelling of 6513957968 in words is "six billion, five hundred thirteen million, nine hundred fifty-seven thousand, nine hundred sixty-eight".