2005430250191 has 2 divisors, whose sum is σ = 2005430250192. Its totient is φ = 2005430250190.

The previous prime is 2005430250139. The next prime is 2005430250217. The reversal of 2005430250191 is 1910520345002.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2005430250191 is a prime.

It is a super-2 number, since 2×2005430250191² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2005430250391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1002715125095 + 1002715125096.

It is an arithmetic number, because the mean of its divisors is an integer number (1002715125096).

Almost surely, 2^{2005430250191} is an apocalyptic number.

2005430250191 is a deficient number, since it is larger than the sum of its proper divisors (1).

2005430250191 is an equidigital number, since it uses as much as digits as its factorization.

2005430250191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10800, while the sum is 32.

Adding to 2005430250191 its reverse (1910520345002), we get a palindrome (3915950595193).

The spelling of 2005430250191 in words is "two trillion, five billion, four hundred thirty million, two hundred fifty thousand, one hundred ninety-one".