6440004000446 has 32 divisors (see below), whose sum is σ = 9768941739648. Its totient is φ = 3183779526400.

The previous prime is 6440004000379. The next prime is 6440004000457.

6440004000446 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 833437835 + ... + 833445561.

It is an arithmetic number, because the mean of its divisors is an integer number (305279429364).

Almost surely, 2^{6440004000446} is an apocalyptic number.

6440004000446 is a deficient number, since it is larger than the sum of its proper divisors (3328937739202).

6440004000446 is a wasteful number, since it uses less digits than its factorization.

6440004000446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12916.

The product of its (nonzero) digits is 36864, while the sum is 32.

The spelling of 6440004000446 in words is "six trillion, four hundred forty billion, four million, four hundred forty-six", and thus it is an aban number.