6543715064 has 16 divisors (see below), whose sum is σ = 12915227400. Its totient is φ = 3099654432.

The previous prime is 6543715051. The next prime is 6543715067. The reversal of 6543715064 is 4605173456.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6543715067) 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, 21525227 + ... + 21525530.

Almost surely, 2^6543715064 is an apocalyptic number.

It is an amenable number.

6543715064 is a deficient number, since it is larger than the sum of its proper divisors (6371512336).

6543715064 is a wasteful number, since it uses less digits than its factorization.

6543715064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43050782 (or 43050778 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 41.

The square root of 6543715064 is about 80893.2324981515. The cubic root of 6543715064 is about 1870.4300024421.

The spelling of 6543715064 in words is "six billion, five hundred forty-three million, seven hundred fifteen thousand, sixty-four".