2105975975 has 6 divisors (see below), whose sum is σ = 2611410240. Its totient is φ = 1684780760.

The previous prime is 2105975923. The next prime is 2105975981. The reversal of 2105975975 is 5795795012.

It is not a de Polignac number, because 2105975975 - 2¹⁶ = 2105910439 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 42119495 + ... + 42119544.

It is an arithmetic number, because the mean of its divisors is an integer number (435235040).

Almost surely, 2^2105975975 is an apocalyptic number.

2105975975 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2105975975 is a deficient number, since it is larger than the sum of its proper divisors (505434265).

2105975975 is an equidigital number, since it uses as much as digits as its factorization.

2105975975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84239049 (or 84239044 counting only the distinct ones).

The product of its (nonzero) digits is 992250, while the sum is 50.

The square root of 2105975975 is about 45890.9138610248. The cubic root of 2105975975 is about 1281.7927302921.

The spelling of 2105975975 in words is "two billion, one hundred five million, nine hundred seventy-five thousand, nine hundred seventy-five".