20441344243 has 4 divisors (see below), whose sum is σ = 20526873120. Its totient is φ = 20355815368.

The previous prime is 20441344241. The next prime is 20441344249. The reversal of 20441344243 is 34244314402.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34244314402 = 2 ⋅17122157201.

It is a cyclic number.

It is not a de Polignac number, because 20441344243 - 2¹ = 20441344241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20441344241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42764080 + ... + 42764557.

It is an arithmetic number, because the mean of its divisors is an integer number (5131718280).

Almost surely, 2^20441344243 is an apocalyptic number.

20441344243 is a deficient number, since it is larger than the sum of its proper divisors (85528877).

20441344243 is an equidigital number, since it uses as much as digits as its factorization.

20441344243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85528876.

The product of its (nonzero) digits is 36864, while the sum is 31.

Adding to 20441344243 its reverse (34244314402), we get a palindrome (54685658645).

The spelling of 20441344243 in words is "twenty billion, four hundred forty-one million, three hundred forty-four thousand, two hundred forty-three".