20334013081 has 2 divisors, whose sum is σ = 20334013082. Its totient is φ = 20334013080.

The previous prime is 20334013079. The next prime is 20334013087. The reversal of 20334013081 is 18031043302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14062165056 + 6271848025 = 118584^2 + 79195^2 .

It is a cyclic number.

It is not a de Polignac number, because 20334013081 - 2¹ = 20334013079 is a prime.

It is a super-3 number, since 3×20334013081³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

Together with 20334013079, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (20334013087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10167006540 + 10167006541.

It is an arithmetic number, because the mean of its divisors is an integer number (10167006541).

Almost surely, 2^20334013081 is an apocalyptic number.

It is an amenable number.

20334013081 is a deficient number, since it is larger than the sum of its proper divisors (1).

20334013081 is an equidigital number, since it uses as much as digits as its factorization.

20334013081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 20334013081 its reverse (18031043302), we get a palindrome (38365056383).

The spelling of 20334013081 in words is "twenty billion, three hundred thirty-four million, thirteen thousand, eighty-one".