20000330000191 has 2 divisors, whose sum is σ = 20000330000192. Its totient is φ = 20000330000190.

The previous prime is 20000330000179. The next prime is 20000330000207. The reversal of 20000330000191 is 19100003300002.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20000330000191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20000330000111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10000165000095 + 10000165000096.

It is an arithmetic number, because the mean of its divisors is an integer number (10000165000096).

Almost surely, 2^{20000330000191} is an apocalyptic number.

20000330000191 is a deficient number, since it is larger than the sum of its proper divisors (1).

20000330000191 is an equidigital number, since it uses as much as digits as its factorization.

20000330000191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162, while the sum is 19.

Adding to 20000330000191 its reverse (19100003300002), we get a palindrome (39100333300193).

The spelling of 20000330000191 in words is "twenty trillion, three hundred thirty million, one hundred ninety-one", and thus it is an aban number.