217189553296 has 45 divisors (see below), whose sum is σ = 423366537139. Its totient is φ = 107937665888.

The previous prime is 217189553291. The next prime is 217189553327. The reversal of 217189553296 is 692355981712.

The square root of 217189553296 is 466036.

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

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 217189553296.

It is not an unprimeable number, because it can be changed into a prime (217189553291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 490269651 + ... + 490270093.

Almost surely, 2^217189553296 is an apocalyptic number.

217189553296 is the 466036-th square number.

It is an amenable number.

217189553296 is a deficient number, since it is larger than the sum of its proper divisors (206176983843).

217189553296 is an frugal number, since it uses more digits than its factorization.

217189553296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1420 (or 708 counting only the distinct ones).

The product of its digits is 8164800, while the sum is 58.

The spelling of 217189553296 in words is "two hundred seventeen billion, one hundred eighty-nine million, five hundred fifty-three thousand, two hundred ninety-six".