40320323240 has 64 divisors (see below), whose sum is σ = 96082200000. Its totient is φ = 15175472128.

The previous prime is 40320323227. The next prime is 40320323261. The reversal of 40320323240 is 4232302304.

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 15 ways as a sum of consecutive naturals, for example, 5095367 + ... + 5103273.

It is an arithmetic number, because the mean of its divisors is an integer number (1501284375).

Almost surely, 2^40320323240 is an apocalyptic number.

40320323240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40320323240 is an abundant number, since it is smaller than the sum of its proper divisors (55761876760).

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

40320323240 is a wasteful number, since it uses less digits than its factorization.

40320323240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15434 (or 15430 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 23.

Adding to 40320323240 its reverse (4232302304), we get a palindrome (44552625544).

The spelling of 40320323240 in words is "forty billion, three hundred twenty million, three hundred twenty-three thousand, two hundred forty".