2871721105 has 16 divisors (see below), whose sum is σ = 3794485824. Its totient is φ = 2069001280.

The previous prime is 2871721091. The next prime is 2871721117. The reversal of 2871721105 is 5011271782.

It is a de Polignac number, because none of the positive numbers 2^k-2871721105 is a prime.

It is a Duffinian 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 15 ways as a sum of consecutive naturals, for example, 238102 + ... + 249871.

It is an arithmetic number, because the mean of its divisors is an integer number (237155364).

Almost surely, 2^2871721105 is an apocalyptic number.

It is an amenable number.

2871721105 is a deficient number, since it is larger than the sum of its proper divisors (922764719).

2871721105 is a wasteful number, since it uses less digits than its factorization.

2871721105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488096.

The product of its (nonzero) digits is 7840, while the sum is 34.

The square root of 2871721105 is about 53588.4418974838. The cubic root of 2871721105 is about 1421.3927195850.

Adding to 2871721105 its reverse (5011271782), we get a palindrome (7882992887).

The spelling of 2871721105 in words is "two billion, eight hundred seventy-one million, seven hundred twenty-one thousand, one hundred five".