217707247012 has 24 divisors (see below), whose sum is σ = 381435768000. Its totient is φ = 108725678880.

The previous prime is 217707247007. The next prime is 217707247039. The reversal of 217707247012 is 210742707712.

It is a happy number.

217707247012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13404937 + ... + 13421167.

It is an arithmetic number, because the mean of its divisors is an integer number (15893157000).

Almost surely, 2^217707247012 is an apocalyptic number.

It is an amenable number.

217707247012 is a deficient number, since it is larger than the sum of its proper divisors (163728520988).

217707247012 is a wasteful number, since it uses less digits than its factorization.

217707247012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19971 (or 19969 counting only the distinct ones).

The product of its (nonzero) digits is 76832, while the sum is 40.

The spelling of 217707247012 in words is "two hundred seventeen billion, seven hundred seven million, two hundred forty-seven thousand, twelve".