217883358064 has 10 divisors (see below), whose sum is σ = 422149006280. Its totient is φ = 108941679024.

The previous prime is 217883358037. The next prime is 217883358067. The reversal of 217883358064 is 460853388712.

It is a junction number, because it is equal to n+sod(n) for n = 217883357996 and 217883358014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (217883358067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6808854924 + ... + 6808854955.

It is an arithmetic number, because the mean of its divisors is an integer number (42214900628).

Almost surely, 2^217883358064 is an apocalyptic number.

It is an amenable number.

217883358064 is a deficient number, since it is larger than the sum of its proper divisors (204265648216).

217883358064 is a wasteful number, since it uses less digits than its factorization.

217883358064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13617709887 (or 13617709881 counting only the distinct ones).

The product of its (nonzero) digits is 7741440, while the sum is 55.

The spelling of 217883358064 in words is "two hundred seventeen billion, eight hundred eighty-three million, three hundred fifty-eight thousand, sixty-four".