2205944188879 has 2 divisors, whose sum is σ = 2205944188880. Its totient is φ = 2205944188878.

The previous prime is 2205944188793. The next prime is 2205944188897. The reversal of 2205944188879 is 9788814495022.

It is a happy number.

Together with next prime (2205944188897) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2205944188879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2205944188579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1102972094439 + 1102972094440.

It is an arithmetic number, because the mean of its divisors is an integer number (1102972094440).

Almost surely, 2^{2205944188879} is an apocalyptic number.

2205944188879 is a deficient number, since it is larger than the sum of its proper divisors (1).

2205944188879 is an equidigital number, since it uses as much as digits as its factorization.

2205944188879 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 92897280, while the sum is 67.

The spelling of 2205944188879 in words is "two trillion, two hundred five billion, nine hundred forty-four million, one hundred eighty-eight thousand, eight hundred seventy-nine".