6644434344466 has 16 divisors (see below), whose sum is σ = 10187137031040. Its totient is φ = 3249508045680.

The previous prime is 6644434344437. The next prime is 6644434344481.

6644434344466 is nontrivially palindromic in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 6644434344466.

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, 196494225 + ... + 196528036.

It is an arithmetic number, because the mean of its divisors is an integer number (636696064440).

Almost surely, 2^{6644434344466} is an apocalyptic number.

6644434344466 is a deficient number, since it is larger than the sum of its proper divisors (3542702686574).

6644434344466 is a wasteful number, since it uses less digits than its factorization.

6644434344466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393022449.

The product of its digits is 191102976, while the sum is 58.

The spelling of 6644434344466 in words is "six trillion, six hundred forty-four billion, four hundred thirty-four million, three hundred forty-four thousand, four hundred sixty-six".