321444144220394 has 16 divisors (see below), whose sum is σ = 537161302014120. Its totient is φ = 143243013869760.

The previous prime is 321444144220391. The next prime is 321444144220417. The reversal of 321444144220394 is 493022441444123.

It can be written as a sum of positive squares in 4 ways, for example, as 108284523820225 + 213159620400169 = 10405985^2 + 14599987^2 .

It is not an unprimeable number, because it can be changed into a prime (321444144220391) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 213159246077 + ... + 213159247584.

Almost surely, 2^{321444144220394} is an apocalyptic number.

321444144220394 is a deficient number, since it is larger than the sum of its proper divisors (215717157793726).

321444144220394 is a wasteful number, since it uses less digits than its factorization.

321444144220394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426318493705.

The product of its (nonzero) digits is 2654208, while the sum is 47.

The spelling of 321444144220394 in words is "three hundred twenty-one trillion, four hundred forty-four billion, one hundred forty-four million, two hundred twenty thousand, three hundred ninety-four".