320404134044 has 24 divisors (see below), whose sum is σ = 595948429440. Its totient is φ = 150296876784.

The previous prime is 320404134031. The next prime is 320404134143. The reversal of 320404134044 is 440431404023.

It is a happy number.

It is a super-2 number, since 2×320404134044² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 320404133998 and 320404134016.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20457434 + ... + 20473089.

It is an arithmetic number, because the mean of its divisors is an integer number (24831184560).

Almost surely, 2^320404134044 is an apocalyptic number.

It is an amenable number.

320404134044 is a deficient number, since it is larger than the sum of its proper divisors (275544295396).

320404134044 is a wasteful number, since it uses less digits than its factorization.

320404134044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40930649 (or 40930647 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 29.

Adding to 320404134044 its reverse (440431404023), we get a palindrome (760835538067).

The spelling of 320404134044 in words is "three hundred twenty billion, four hundred four million, one hundred thirty-four thousand, forty-four".