20443002113 has 4 divisors (see below), whose sum is σ = 20828719188. Its totient is φ = 20057285040.

The previous prime is 20443002091. The next prime is 20443002131. The reversal of 20443002113 is 31120034402.

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

It can be written as a sum of positive squares in 2 ways, for example, as 18037295809 + 2405706304 = 134303^2 + 49048^2 .

It is a cyclic number.

It is not a de Polignac number, because 20443002113 - 2¹⁴ = 20442985729 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20443007113) 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, 192858458 + ... + 192858563.

It is an arithmetic number, because the mean of its divisors is an integer number (5207179797).

Almost surely, 2^20443002113 is an apocalyptic number.

It is an amenable number.

20443002113 is a deficient number, since it is larger than the sum of its proper divisors (385717075).

20443002113 is an equidigital number, since it uses as much as digits as its factorization.

20443002113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385717074.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 20443002113 its reverse (31120034402), we get a palindrome (51563036515).

The spelling of 20443002113 in words is "twenty billion, four hundred forty-three million, two thousand, one hundred thirteen".