2118867380191 has 2 divisors, whose sum is σ = 2118867380192. Its totient is φ = 2118867380190.

The previous prime is 2118867380183. The next prime is 2118867380197. The reversal of 2118867380191 is 1910837688112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2118867380191 - 2³ = 2118867380183 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2118867380197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1059433690095 + 1059433690096.

It is an arithmetic number, because the mean of its divisors is an integer number (1059433690096).

Almost surely, 2^{2118867380191} is an apocalyptic number.

2118867380191 is a deficient number, since it is larger than the sum of its proper divisors (1).

2118867380191 is an equidigital number, since it uses as much as digits as its factorization.

2118867380191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1161216, while the sum is 55.

The spelling of 2118867380191 in words is "two trillion, one hundred eighteen billion, eight hundred sixty-seven million, three hundred eighty thousand, one hundred ninety-one".