6446338336446 has 16 divisors (see below), whose sum is σ = 13166988943104. Its totient is φ = 2103060733784.

The previous prime is 6446338336409. The next prime is 6446338336453.

6446338336446 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 6446338336446.

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, 11429677620 + ... + 11429678183.

It is an arithmetic number, because the mean of its divisors is an integer number (822936808944).

Almost surely, 2^{6446338336446} is an apocalyptic number.

6446338336446 is an abundant number, since it is smaller than the sum of its proper divisors (6720650606658).

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

6446338336446 is a wasteful number, since it uses less digits than its factorization.

6446338336446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22859355855.

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

The spelling of 6446338336446 in words is "six trillion, four hundred forty-six billion, three hundred thirty-eight million, three hundred thirty-six thousand, four hundred forty-six".