40065322320 has 120 divisors (see below), whose sum is σ = 135940085736. Its totient is φ = 10573922304.

The previous prime is 40065322301. The next prime is 40065322337. The reversal of 40065322320 is 2322356004.

40065322320 is a `hidden beast` number, since 4 + 0 + 0 + 653 + 2 + 2 + 3 + 2 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1552044816 + 38513277504 = 39396^2 + 196248^2 .

It is a tau number, because it is divible by the number of its divisors (120).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 216997 + ... + 356676.

Almost surely, 2^40065322320 is an apocalyptic number.

40065322320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40065322320 is an abundant number, since it is smaller than the sum of its proper divisors (95874763416).

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

40065322320 is a wasteful number, since it uses less digits than its factorization.

40065322320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 573789 (or 573780 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 27.

Adding to 40065322320 its reverse (2322356004), we get a palindrome (42387678324).

The spelling of 40065322320 in words is "forty billion, sixty-five million, three hundred twenty-two thousand, three hundred twenty".