2105046665 has 16 divisors (see below), whose sum is σ = 2538630288. Its totient is φ = 1675677696.

The previous prime is 2105046649. The next prime is 2105046677. The reversal of 2105046665 is 5666405012.

It can be written as a sum of positive squares in 8 ways, for example, as 224610169 + 1880436496 = 14987^2 + 43364^2 .

It is a cyclic number.

It is not a de Polignac number, because 2105046665 - 2⁴ = 2105046649 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1088039 + ... + 1089971.

It is an arithmetic number, because the mean of its divisors is an integer number (158664393).

Almost surely, 2^2105046665 is an apocalyptic number.

It is an amenable number.

2105046665 is a deficient number, since it is larger than the sum of its proper divisors (433583623).

2105046665 is a wasteful number, since it uses less digits than its factorization.

2105046665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2908.

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 2105046665 is about 45880.7875368329. The cubic root of 2105046665 is about 1281.6041624465.

The spelling of 2105046665 in words is "two billion, one hundred five million, forty-six thousand, six hundred sixty-five".