20111443113 has 8 divisors (see below), whose sum is σ = 26818016800. Its totient is φ = 13406249088.

The previous prime is 20111443067. The next prime is 20111443153. The reversal of 20111443113 is 31134411102.

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

It is not a de Polignac number, because 20111443113 - 2¹⁶ = 20111377577 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 20111443113.

It is not an unprimeable number, because it can be changed into a prime (20111443153) 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, 310408 + ... + 369561.

It is an arithmetic number, because the mean of its divisors is an integer number (3352252100).

Almost surely, 2^20111443113 is an apocalyptic number.

It is an amenable number.

20111443113 is a deficient number, since it is larger than the sum of its proper divisors (6706573687).

20111443113 is an equidigital number, since it uses as much as digits as its factorization.

20111443113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 689831.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 20111443113 its reverse (31134411102), we get a palindrome (51245854215).

The spelling of 20111443113 in words is "twenty billion, one hundred eleven million, four hundred forty-three thousand, one hundred thirteen".