20051440113 has 8 divisors (see below), whose sum is σ = 27173536576. Its totient is φ = 13148485200.

The previous prime is 20051440093. The next prime is 20051440141. The reversal of 20051440113 is 31104415002.

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

It is not a de Polignac number, because 20051440113 - 2¹⁷ = 20051309041 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 20051440113.

It is not an unprimeable number, because it can be changed into a prime (20051440163) 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, 54785173 + ... + 54785538.

It is an arithmetic number, because the mean of its divisors is an integer number (3396692072).

Almost surely, 2^20051440113 is an apocalyptic number.

It is an amenable number.

20051440113 is a deficient number, since it is larger than the sum of its proper divisors (7122096463).

20051440113 is a wasteful number, since it uses less digits than its factorization.

20051440113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109570775.

The product of its (nonzero) digits is 480, while the sum is 21.

Adding to 20051440113 its reverse (31104415002), we get a palindrome (51155855115).

The spelling of 20051440113 in words is "twenty billion, fifty-one million, four hundred forty thousand, one hundred thirteen".