20411012555191 has 2 divisors, whose sum is σ = 20411012555192. Its totient is φ = 20411012555190.

The previous prime is 20411012555177. The next prime is 20411012555203. The reversal of 20411012555191 is 19155521011402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20411012555191 - 2¹¹ = 20411012553143 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20411012555191.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20411012552191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10205506277595 + 10205506277596.

It is an arithmetic number, because the mean of its divisors is an integer number (10205506277596).

Almost surely, 2^{20411012555191} is an apocalyptic number.

20411012555191 is a deficient number, since it is larger than the sum of its proper divisors (1).

20411012555191 is an equidigital number, since it uses as much as digits as its factorization.

20411012555191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18000, while the sum is 37.

Adding to 20411012555191 its reverse (19155521011402), we get a palindrome (39566533566593).

The spelling of 20411012555191 in words is "twenty trillion, four hundred eleven billion, twelve million, five hundred fifty-five thousand, one hundred ninety-one".