2105783408279 has 2 divisors, whose sum is σ = 2105783408280. Its totient is φ = 2105783408278.

The previous prime is 2105783408269. The next prime is 2105783408291. The reversal of 2105783408279 is 9728043875012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2105783408279 - 2³² = 2101488440983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2105783408269) 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, 1052891704139 + 1052891704140.

It is an arithmetic number, because the mean of its divisors is an integer number (1052891704140).

Almost surely, 2^{2105783408279} is an apocalyptic number.

2105783408279 is a deficient number, since it is larger than the sum of its proper divisors (1).

2105783408279 is an equidigital number, since it uses as much as digits as its factorization.

2105783408279 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6773760, while the sum is 56.

The spelling of 2105783408279 in words is "two trillion, one hundred five billion, seven hundred eighty-three million, four hundred eight thousand, two hundred seventy-nine".