6646446446466 has 16 divisors (see below), whose sum is σ = 13293463413888. Its totient is φ = 2215387062000.

The previous prime is 6646446446441. The next prime is 6646446446489.

6646446446466 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 6646446446397 and 6646446446406.

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, 23620185 + ... + 23899916.

It is an arithmetic number, because the mean of its divisors is an integer number (830841463368).

Almost surely, 2^{6646446446466} is an apocalyptic number.

6646446446466 is an abundant number, since it is smaller than the sum of its proper divisors (6647016967422).

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

6646446446466 is a wasteful number, since it uses less digits than its factorization.

6646446446466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47543417.

The product of its digits is 1146617856, while the sum is 66.

The spelling of 6646446446466 in words is "six trillion, six hundred forty-six billion, four hundred forty-six million, four hundred forty-six thousand, four hundred sixty-six".