20004311052071 has 2 divisors, whose sum is σ = 20004311052072. Its totient is φ = 20004311052070.

The previous prime is 20004311052067. The next prime is 20004311052109. The reversal of 20004311052071 is 17025011340002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20004311052071 - 2² = 20004311052067 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20004311052071.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20004311052001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10002155526035 + 10002155526036.

It is an arithmetic number, because the mean of its divisors is an integer number (10002155526036).

Almost surely, 2^{20004311052071} is an apocalyptic number.

20004311052071 is a deficient number, since it is larger than the sum of its proper divisors (1).

20004311052071 is an equidigital number, since it uses as much as digits as its factorization.

20004311052071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1680, while the sum is 26.

Adding to 20004311052071 its reverse (17025011340002), we get a palindrome (37029322392073).

The spelling of 20004311052071 in words is "twenty trillion, four billion, three hundred eleven million, fifty-two thousand, seventy-one".