4521217705 has 16 divisors (see below), whose sum is σ = 5477760144. Its totient is φ = 3582259200.

The previous prime is 4521217699. The next prime is 4521217717. The reversal of 4521217705 is 5077121254.

4521217705 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 1255780969 + 3265436736 = 35437^2 + 57144^2 .

It is a de Polignac number, because none of the positive numbers 2^k-4521217705 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, 236505 + ... + 254905.

It is an arithmetic number, because the mean of its divisors is an integer number (342360009).

Almost surely, 2^4521217705 is an apocalyptic number.

It is an amenable number.

4521217705 is a deficient number, since it is larger than the sum of its proper divisors (956542439).

4521217705 is a wasteful number, since it uses less digits than its factorization.

4521217705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18876.

The product of its (nonzero) digits is 19600, while the sum is 34.

The square root of 4521217705 is about 67240.0007807852. Note that the first 3 decimals coincide. The cubic root of 4521217705 is about 1653.5543464795.

Adding to 4521217705 its reverse (5077121254), we get a palindrome (9598338959).

The spelling of 4521217705 in words is "four billion, five hundred twenty-one million, two hundred seventeen thousand, seven hundred five".