217105483684 has 24 divisors (see below), whose sum is σ = 383553182880. Its totient is φ = 107519219136.

The previous prime is 217105483649. The next prime is 217105483687. The reversal of 217105483684 is 486384501712.

It is not an unprimeable number, because it can be changed into a prime (217105483687) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2554872 + ... + 2638480.

It is an arithmetic number, because the mean of its divisors is an integer number (15981382620).

Almost surely, 2^217105483684 is an apocalyptic number.

It is an amenable number.

217105483684 is a deficient number, since it is larger than the sum of its proper divisors (166447699196).

217105483684 is a wasteful number, since it uses less digits than its factorization.

217105483684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89787 (or 89785 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 49.

The spelling of 217105483684 in words is "two hundred seventeen billion, one hundred five million, four hundred eighty-three thousand, six hundred eighty-four".