6466209921244 has 12 divisors (see below), whose sum is σ = 11321667410368. Its totient is φ = 3231447804000.

The previous prime is 6466209921233. The next prime is 6466209921257. The reversal of 6466209921244 is 4421299026646.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 414280377 + ... + 414295984.

Almost surely, 2^{6466209921244} is an apocalyptic number.

It is an amenable number.

6466209921244 is a deficient number, since it is larger than the sum of its proper divisors (4855457489124).

6466209921244 is a wasteful number, since it uses less digits than its factorization.

6466209921244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 828578316 (or 828578314 counting only the distinct ones).

The product of its (nonzero) digits is 8957952, while the sum is 55.

The spelling of 6466209921244 in words is "six trillion, four hundred sixty-six billion, two hundred nine million, nine hundred twenty-one thousand, two hundred forty-four".