217848020089 has 16 divisors (see below), whose sum is σ = 268994304000. Its totient is φ = 175742935872.

The previous prime is 217848020087. The next prime is 217848020119. The reversal of 217848020089 is 980020848712.

It is not a de Polignac number, because 217848020089 - 2¹ = 217848020087 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (217848020087) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18674329 + ... + 18685990.

It is an arithmetic number, because the mean of its divisors is an integer number (16812144000).

Almost surely, 2^217848020089 is an apocalyptic number.

It is an amenable number.

217848020089 is a deficient number, since it is larger than the sum of its proper divisors (51146283911).

217848020089 is an equidigital number, since it uses as much as digits as its factorization.

217848020089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37360357 (or 37360343 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 49.

The spelling of 217848020089 in words is "two hundred seventeen billion, eight hundred forty-eight million, twenty thousand, eighty-nine".