6543338260 has 24 divisors (see below), whose sum is σ = 14112390600. Its totient is φ = 2546596224.

The previous prime is 6543338239. The next prime is 6543338309. The reversal of 6543338260 is 628333456.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1102505616 + 5440832644 = 33204^2 + 73762^2 .

It is a congruent number.

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, 4420435 + ... + 4421914.

It is an arithmetic number, because the mean of its divisors is an integer number (588016275).

Almost surely, 2^6543338260 is an apocalyptic number.

It is an amenable number.

6543338260 is an abundant number, since it is smaller than the sum of its proper divisors (7569052340).

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

6543338260 is a wasteful number, since it uses less digits than its factorization.

6543338260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8842395 (or 8842393 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 40.

The square root of 6543338260 is about 80890.9034440833. The cubic root of 6543338260 is about 1870.3941003576.

The spelling of 6543338260 in words is "six billion, five hundred forty-three million, three hundred thirty-eight thousand, two hundred sixty".