2005500540191 has 2 divisors, whose sum is σ = 2005500540192. Its totient is φ = 2005500540190.

The previous prime is 2005500540167. The next prime is 2005500540217. The reversal of 2005500540191 is 1910450055002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2005500540191 - 2²² = 2005496345887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2005500540691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1002750270095 + 1002750270096.

It is an arithmetic number, because the mean of its divisors is an integer number (1002750270096).

Almost surely, 2^{2005500540191} is an apocalyptic number.

2005500540191 is a deficient number, since it is larger than the sum of its proper divisors (1).

2005500540191 is an equidigital number, since it uses as much as digits as its factorization.

2005500540191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9000, while the sum is 32.

Adding to 2005500540191 its reverse (1910450055002), we get a palindrome (3915950595193).

The spelling of 2005500540191 in words is "two trillion, five billion, five hundred million, five hundred forty thousand, one hundred ninety-one".