6566216448 has 72 divisors (see below), whose sum is σ = 19064437056. Its totient is φ = 1989760000.

The previous prime is 6566216443. The next prime is 6566216497. The reversal of 6566216448 is 8446126656.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a junction number, because it is equal to n+sod(n) for n = 6566216397 and 6566216406.

It is not an unprimeable number, because it can be changed into a prime (6566216443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 380178 + ... + 397073.

It is an arithmetic number, because the mean of its divisors is an integer number (264783848).

Almost surely, 2^6566216448 is an apocalyptic number.

It is an amenable number.

6566216448 is an abundant number, since it is smaller than the sum of its proper divisors (12498220608).

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

6566216448 is a wasteful number, since it uses less digits than its factorization.

6566216448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 777281 (or 777267 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 48.

The square root of 6566216448 is about 81032.1938984747. The cubic root of 6566216448 is about 1872.5714523926.

The spelling of 6566216448 in words is "six billion, five hundred sixty-six million, two hundred sixteen thousand, four hundred forty-eight".