6466432346646 has 16 divisors (see below), whose sum is σ = 12948279321600. Its totient is φ = 2152908344168.

The previous prime is 6466432346623. The next prime is 6466432346651.

It is a happy number.

6466432346646 is nontrivially palindromic in base 10.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 6466432346646.

It is a congruent number.

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, 642270726 + ... + 642280793.

It is an arithmetic number, because the mean of its divisors is an integer number (809267457600).

Almost surely, 2^{6466432346646} is an apocalyptic number.

6466432346646 is an abundant number, since it is smaller than the sum of its proper divisors (6481846974954).

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

6466432346646 is a wasteful number, since it uses less digits than its factorization.

6466432346646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1284552363.

The product of its digits is 214990848, while the sum is 60.

The spelling of 6466432346646 in words is "six trillion, four hundred sixty-six billion, four hundred thirty-two million, three hundred forty-six thousand, six hundred forty-six".