2102875665 has 16 divisors (see below), whose sum is σ = 3670474176. Its totient is φ = 1019576000.

The previous prime is 2102875613. The next prime is 2102875681. The reversal of 2102875665 is 5665782012.

It is not a de Polignac number, because 2102875665 - 2⁸ = 2102875409 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 6372186 + ... + 6372515.

It is an arithmetic number, because the mean of its divisors is an integer number (229404636).

Almost surely, 2^2102875665 is an apocalyptic number.

It is an amenable number.

2102875665 is a deficient number, since it is larger than the sum of its proper divisors (1567598511).

2102875665 is a wasteful number, since it uses less digits than its factorization.

2102875665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12744720.

The product of its (nonzero) digits is 201600, while the sum is 42.

The square root of 2102875665 is about 45857.1222930528. The cubic root of 2102875665 is about 1281.1634248383.

The spelling of 2102875665 in words is "two billion, one hundred two million, eight hundred seventy-five thousand, six hundred sixty-five".