20010201943 has 2 divisors, whose sum is σ = 20010201944. Its totient is φ = 20010201942.

The previous prime is 20010201941. The next prime is 20010201947. The reversal of 20010201943 is 34910201002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20010201943 - 2¹ = 20010201941 is a prime.

Together with 20010201941, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20010201941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10005100971 + 10005100972.

It is an arithmetic number, because the mean of its divisors is an integer number (10005100972).

Almost surely, 2^20010201943 is an apocalyptic number.

20010201943 is a deficient number, since it is larger than the sum of its proper divisors (1).

20010201943 is an equidigital number, since it uses as much as digits as its factorization.

20010201943 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 20010201943 its reverse (34910201002), we get a palindrome (54920402945).

The spelling of 20010201943 in words is "twenty billion, ten million, two hundred one thousand, nine hundred forty-three".