217340000000 has 144 divisors (see below), whose sum is σ = 542337283488. Its totient is φ = 86928000000.

The previous prime is 217339999957. The next prime is 217340000023. The reversal of 217340000000 is 43712.

It is a happy number.

It is a congruent 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, 19994567 + ... + 20005433.

Almost surely, 2^217340000000 is an apocalyptic number.

217340000000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 217340000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (271168641744).

217340000000 is an abundant number, since it is smaller than the sum of its proper divisors (324997283488).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

217340000000 is an frugal number, since it uses more digits than its factorization.

217340000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10918 (or 10874 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 17.

Adding to 217340000000 its reverse (43712), we get a palindrome (217340043712).

The spelling of 217340000000 in words is "two hundred seventeen billion, three hundred forty million", and thus it is an aban number.