20052043381 has 2 divisors, whose sum is σ = 20052043382. Its totient is φ = 20052043380.

The previous prime is 20052043331. The next prime is 20052043447. The reversal of 20052043381 is 18334025002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19749805156 + 302238225 = 140534^2 + 17385^2 .

It is a cyclic number.

It is not a de Polignac number, because 20052043381 - 2¹⁵ = 20052010613 is a prime.

It is a super-2 number, since 2×20052043381² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20052043331) 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, 10026021690 + 10026021691.

It is an arithmetic number, because the mean of its divisors is an integer number (10026021691).

Almost surely, 2^20052043381 is an apocalyptic number.

It is an amenable number.

20052043381 is a deficient number, since it is larger than the sum of its proper divisors (1).

20052043381 is an equidigital number, since it uses as much as digits as its factorization.

20052043381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 28.

Adding to 20052043381 its reverse (18334025002), we get a palindrome (38386068383).

The spelling of 20052043381 in words is "twenty billion, fifty-two million, forty-three thousand, three hundred eighty-one".