6504271866 has 16 divisors (see below), whose sum is σ = 14453937600. Its totient is φ = 2168090604.

The previous prime is 6504271841. The next prime is 6504271877. The reversal of 6504271866 is 6681724056.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60224686 + ... + 60224793.

It is an arithmetic number, because the mean of its divisors is an integer number (903371100).

Almost surely, 2^6504271866 is an apocalyptic number.

6504271866 is an abundant number, since it is smaller than the sum of its proper divisors (7949665734).

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

6504271866 is a wasteful number, since it uses less digits than its factorization.

6504271866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120449490 (or 120449484 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The square root of 6504271866 is about 80649.0661198256. The cubic root of 6504271866 is about 1866.6643295818.

The spelling of 6504271866 in words is "six billion, five hundred four million, two hundred seventy-one thousand, eight hundred sixty-six".