320636444144 has 20 divisors (see below), whose sum is σ = 627637578624. Its totient is φ = 158665456128.

The previous prime is 320636444101. The next prime is 320636444147. The reversal of 320636444144 is 441444636023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320636444147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103296272 + ... + 103299375.

Almost surely, 2^320636444144 is an apocalyptic number.

It is an amenable number.

320636444144 is a deficient number, since it is larger than the sum of its proper divisors (307001134480).

320636444144 is a wasteful number, since it uses less digits than its factorization.

320636444144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206595752 (or 206595746 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 41.

The spelling of 320636444144 in words is "three hundred twenty billion, six hundred thirty-six million, four hundred forty-four thousand, one hundred forty-four".