217060946404 has 27 divisors (see below), whose sum is σ = 381673671771. Its totient is φ = 108013792320.

The previous prime is 217060946393. The next prime is 217060946413. The reversal of 217060946404 is 404649060712.

The square root of 217060946404 is 465898.

It is a perfect power (a square), and thus also a powerful number.

217060946404 is digitally balanced in base 2, 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 4 ways, for example, as 13876368804 + 203184577600 = 117798^2 + 450760^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 261834262 + ... + 261835090.

Almost surely, 2^217060946404 is an apocalyptic number.

217060946404 is the 465898-th square number.

It is an amenable number.

217060946404 is a deficient number, since it is larger than the sum of its proper divisors (164612725367).

217060946404 is an frugal number, since it uses more digits than its factorization.

217060946404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2224 (or 1112 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 43.

The spelling of 217060946404 in words is "two hundred seventeen billion, sixty million, nine hundred forty-six thousand, four hundred four".