320440010144 has 24 divisors (see below), whose sum is σ = 631161064548. Its totient is φ = 160145136640.

The previous prime is 320440010141. The next prime is 320440010147. The reversal of 320440010144 is 441010044023.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (320440010141) and next prime (320440010147).

It can be written as a sum of positive squares in 2 ways, for example, as 318533814544 + 1906195600 = 564388^2 + 43660^2 .

It is not an unprimeable number, because it can be changed into a prime (320440010141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2270057 + ... + 2407080.

Almost surely, 2^320440010144 is an apocalyptic number.

It is an amenable number.

320440010144 is a deficient number, since it is larger than the sum of its proper divisors (310721054404).

320440010144 is a wasteful number, since it uses less digits than its factorization.

320440010144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4679288 (or 4679280 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 320440010144 its reverse (441010044023), we get a palindrome (761450054167).

The spelling of 320440010144 in words is "three hundred twenty billion, four hundred forty million, ten thousand, one hundred forty-four".