40021320113 has 8 divisors (see below), whose sum is σ = 40438091232. Its totient is φ = 39604634496.

The previous prime is 40021320077. The next prime is 40021320121. The reversal of 40021320113 is 31102312004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40021320113 - 2²⁰ = 40020271537 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40021320091 and 40021320100.

It is not an unprimeable number, because it can be changed into a prime (40021326113) 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 7 ways as a sum of consecutive naturals, for example, 1424306 + ... + 1452132.

It is an arithmetic number, because the mean of its divisors is an integer number (5054761404).

Almost surely, 2^40021320113 is an apocalyptic number.

It is an amenable number.

40021320113 is a deficient number, since it is larger than the sum of its proper divisors (416771119).

40021320113 is a wasteful number, since it uses less digits than its factorization.

40021320113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42751.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 40021320113 its reverse (31102312004), we get a palindrome (71123632117).

The spelling of 40021320113 in words is "forty billion, twenty-one million, three hundred twenty thousand, one hundred thirteen".