40320322044 has 36 divisors (see below), whose sum is σ = 96319610856. Its totient is φ = 13127539488.

The previous prime is 40320322027. The next prime is 40320322069. The reversal of 40320322044 is 44022302304.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 886419 + ... + 930794.

It is an arithmetic number, because the mean of its divisors is an integer number (2675544746).

Almost surely, 2^40320322044 is an apocalyptic number.

It is an amenable number.

40320322044 is an abundant number, since it is smaller than the sum of its proper divisors (55999288812).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40320322044 is a wasteful number, since it uses less digits than its factorization.

40320322044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1817306 (or 1817261 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 24.

Adding to 40320322044 its reverse (44022302304), we get a palindrome (84342624348).

The spelling of 40320322044 in words is "forty billion, three hundred twenty million, three hundred twenty-two thousand, forty-four".