321445122664 has 8 divisors (see below), whose sum is σ = 602709605010. Its totient is φ = 160722561328.

The previous prime is 321445122641. The next prime is 321445122683. The reversal of 321445122664 is 466221544123.

It can be written as a sum of positive squares in only one way, i.e., 321409624900 + 35497764 = 566930^2 + 5958^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20090320159 + ... + 20090320174.

Almost surely, 2^321445122664 is an apocalyptic number.

It is an amenable number.

321445122664 is a deficient number, since it is larger than the sum of its proper divisors (281264482346).

321445122664 is a wasteful number, since it uses less digits than its factorization.

321445122664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40180640339 (or 40180640335 counting only the distinct ones).

The product of its digits is 276480, while the sum is 40.

Adding to 321445122664 its reverse (466221544123), we get a palindrome (787666666787).

The spelling of 321445122664 in words is "three hundred twenty-one billion, four hundred forty-five million, one hundred twenty-two thousand, six hundred sixty-four".