20011067243 has 2 divisors, whose sum is σ = 20011067244. Its totient is φ = 20011067242.

The previous prime is 20011067173. The next prime is 20011067281. The reversal of 20011067243 is 34276011002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20011067243 - 2²⁶ = 19943958379 is a prime.

It is not a weakly prime, because it can be changed into another prime (20011067443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10005533621 + 10005533622.

It is an arithmetic number, because the mean of its divisors is an integer number (10005533622).

Almost surely, 2^20011067243 is an apocalyptic number.

20011067243 is a deficient number, since it is larger than the sum of its proper divisors (1).

20011067243 is an equidigital number, since it uses as much as digits as its factorization.

20011067243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 26.

Adding to 20011067243 its reverse (34276011002), we get a palindrome (54287078245).

The spelling of 20011067243 in words is "twenty billion, eleven million, sixty-seven thousand, two hundred forty-three".