40081380323 has 4 divisors (see below), whose sum is σ = 40163683440. Its totient is φ = 39999077208.

The previous prime is 40081380299. The next prime is 40081380331. The reversal of 40081380323 is 32308318004.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40081380323 - 2¹⁸ = 40081118179 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40081380323.

It is not an unprimeable number, because it can be changed into a prime (40081380373) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 41150828 + ... + 41151801.

It is an arithmetic number, because the mean of its divisors is an integer number (10040920860).

Almost surely, 2^40081380323 is an apocalyptic number.

40081380323 is a deficient number, since it is larger than the sum of its proper divisors (82303117).

40081380323 is an equidigital number, since it uses as much as digits as its factorization.

40081380323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82303116.

The product of its (nonzero) digits is 13824, while the sum is 32.

Adding to 40081380323 its reverse (32308318004), we get a palindrome (72389698327).

The spelling of 40081380323 in words is "forty billion, eighty-one million, three hundred eighty thousand, three hundred twenty-three".